Element Explorer

1
H
1
H
1766
-258 C
-252 C
1.01
Nonmetal
Hydrogen
x
1
H
Hydrogen
Series: Nonmetal
Mass: 1.00794(7) g·mol−1
Discovered: 1766
Melting Point: -258.95 C (14 K)
Boiling Point: -252.87 C (20 K)
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2
He
2
He
1868
N/A
-268 C
4.00
Noble gas
Helium
x
2
He
Helium
Series: Noble gas
Mass: 4.002602(2) g·mol−1
Discovered: 1868
Melting Point: N/A
Boiling Point: -268.93 C (04 K)
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3
Li
3
Li
1817
180 C
1341 C
6.94
Alkali metal
Lithium
x
3
Li
Lithium
Series: Alkali metal
Mass: 6.941(2) g·mol−1
Discovered: 1817
Melting Point: 180.75 C (453 K)
Boiling Point: 1341.85 C (1615 K)
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4
Be
4
Be
1828
1277 C
2468 C
9.01
Alkaline earth metal
Beryllium
x
4
Be
Beryllium
Series: Alkaline earth metal
Mass: 9.012182(3) g·mol−1
Discovered: 1828
Melting Point: 1277.85 C (1551 K)
Boiling Point: 2468.85 C (2742 K)
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5
B
5
B
1808
2296 C
3926 C
10.81
Metalloid
Boron
x
5
B
Boron
Series: Metalloid
Mass: 10.811(7) g·mol−1
Discovered: 1808
Melting Point: 2296.85 C (2570 K)
Boiling Point: 3926.85 C (4200 K)
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6
C
6
C
antiquity
3674 C
4826 C
12.01
Nonmetal
Carbon
x
6
C
Carbon
Series: Nonmetal
Mass: 12.0107(8) g·mol−1
Discovered: antiquity
Melting Point: 3674.85 C (3948 K)
Boiling Point: 4826.85 C (5100 K)
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7
N
7
N
1772
-209 C
-195 C
14.01
Nonmetal
Nitrogen
x
7
N
Nitrogen
Series: Nonmetal
Mass: 14.0067(2) g·mol−1
Discovered: 1772
Melting Point: -209.85 C (63 K)
Boiling Point: -195.79 C (77 K)
View pictures of Nitrogen at the Wooden Periodic Table.
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8
O
8
O
1771
-222 C
-182 C
16.00
Nonmetal
Oxygen
x
8
O
Oxygen
Series: Nonmetal
Mass: 15.9994(3) g·mol−1
Discovered: 1771
Melting Point: -222.65 C (50 K)
Boiling Point: -182.95 C (90 K)
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9
F
9
F
1886
-219 C
-188 C
19.00
Halogen
Fluorine
x
9
F
Fluorine
Series: Halogen
Mass: 18.998403(5) g·mol−1
Discovered: 1886
Melting Point: -219.55 C (53 K)
Boiling Point: -188.12 C (85 K)
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10
Ne
10
Ne
1898
-248 C
-246 C
20.18
Noble gas
Neon
x
10
Ne
Neon
Series: Noble gas
Mass: 20.1797(6) g·mol−1
Discovered: 1898
Melting Point: -248.45 C (24 K)
Boiling Point: -246.08 C (27 K)
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11
Na
11
Na
1807
97 C
882 C
22.99
Alkali metal
Sodium
x
11
Na
Sodium
Series: Alkali metal
Mass: 22.989769(2) g·mol−1
Discovered: 1807
Melting Point: 97.85 C (371 K)
Boiling Point: 882.85 C (1156 K)
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12
Mg
12
Mg
1755
649 C
1089 C
24.30
Alkaline earth metal
Magnesium
x
12
Mg
Magnesium
Series: Alkaline earth metal
Mass: 24.305(6) g·mol−1
Discovered: 1755
Melting Point: 649.85 C (923 K)
Boiling Point: 1089.85 C (1363 K)
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13
Al
13
Al
1825
660 C
2518 C
26.98
Poor metal
Aluminium
x
13
Al
Aluminium
Series: Poor metal
Mass: 26.981539(8) g·mol−1
Discovered: 1825
Melting Point: 660.25 C (933 K)
Boiling Point: 2518.85 C (2792 K)
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14
Si
14
Si
1823
1406 C
3264 C
28.09
Metalloid
Silicon
x
14
Si
Silicon
Series: Metalloid
Mass: 28.0855(3) g·mol−1
Discovered: 1823
Melting Point: 1406.85 C (1680 K)
Boiling Point: 3264.85 C (3538 K)
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15
P
15
P
1669
44 C
279 C
30.97
Nonmetal
Phosphorus
x
15
P
Phosphorus
Series: Nonmetal
Mass: 30.973762(2) g·mol−1
Discovered: 1669
Melting Point: 44.15 C (317 K)
Boiling Point: 279.85 C (553 K)
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16
S
16
S
antiquity
115 C
444 C
32.06
Nonmetal
Sulfur
x
16
S
Sulfur
Series: Nonmetal
Mass: 32.065(5) g·mol−1
Discovered: antiquity
Melting Point: 115.36 C (388 K)
Boiling Point: 444.65 C (717 K)
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17
Cl
17
Cl
1774
-101 C
-34 C
35.45
Halogen
Chlorine
x
17
Cl
Chlorine
Series: Halogen
Mass: 35.453(2) g·mol−1
Discovered: 1774
Melting Point: -101.15 C (172 K)
Boiling Point: -34.04 C (239 K)
View pictures of Chlorine at the Wooden Periodic Table.
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18
Ar
18
Ar
1894
-189 C
-185 C
39.95
Noble gas
Argon
x
18
Ar
Argon
Series: Noble gas
Mass: 39.948(1) g·mol−1
Discovered: 1894
Melting Point: -189.15 C (84 K)
Boiling Point: -185.85 C (87 K)
View pictures of Argon at the Wooden Periodic Table.
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19
K
19
K
1807
63 C
758 C
39.10
Alkali metal
Potassium
x
19
K
Potassium
Series: Alkali metal
Mass: 39.0983(1) g·mol−1
Discovered: 1807
Melting Point: 63.35 C (336 K)
Boiling Point: 758.85 C (1032 K)
View pictures of Potassium at the Wooden Periodic Table.
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20
Ca
20
Ca
1808
838 C
1483 C
40.08
Alkaline earth metal
Calcium
x
20
Ca
Calcium
Series: Alkaline earth metal
Mass: 40.078(4) g·mol−1
Discovered: 1808
Melting Point: 838.85 C (1112 K)
Boiling Point: 1483.85 C (1757 K)
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21
Sc
21
Sc
1879
1538 C
2835 C
44.96
Transition metal
Scandium
x
21
Sc
Scandium
Series: Transition metal
Mass: 44.955912(6) g·mol−1
Discovered: 1879
Melting Point: 1538.85 C (1812 K)
Boiling Point: 2835.85 C (3109 K)
View pictures of Scandium at the Wooden Periodic Table.
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22
Ti
22
Ti
1797
1656 C
3286 C
47.87
Transition metal
Titanium
x
22
Ti
Titanium
Series: Transition metal
Mass: 47.867(1) g·mol−1
Discovered: 1797
Melting Point: 1656.85 C (1930 K)
Boiling Point: 3286.85 C (3560 K)
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23
V
23
V
1801
1901 C
3406 C
50.94
Transition metal
Vanadium
x
23
V
Vanadium
Series: Transition metal
Mass: 50.9415(1) g·mol−1
Discovered: 1801
Melting Point: 1901.85 C (2175 K)
Boiling Point: 3406.85 C (3680 K)
View pictures of Vanadium at the Wooden Periodic Table.
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24
Cr
24
Cr
1797
1856 C
2670 C
52.00
Transition metal
Chromium
x
24
Cr
Chromium
Series: Transition metal
Mass: 51.9961(6) g·mol−1
Discovered: 1797
Melting Point: 1856.85 C (2130 K)
Boiling Point: 2670.85 C (2944 K)
View pictures of Chromium at the Wooden Periodic Table.
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25
Mn
25
Mn
1774
1245 C
2060 C
54.94
Transition metal
Manganese
x
25
Mn
Manganese
Series: Transition metal
Mass: 54.938045(5) g·mol−1
Discovered: 1774
Melting Point: 1245.85 C (1519 K)
Boiling Point: 2060.85 C (2334 K)
View pictures of Manganese at the Wooden Periodic Table.
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26
Fe
26
Fe
antiquity
1534 C
2860 C
55.84
Transition metal
Iron
x
26
Fe
Iron
Series: Transition metal
Mass: 55.845(2) g·mol−1
Discovered: antiquity
Melting Point: 1534.85 C (1808 K)
Boiling Point: 2860.85 C (3134 K)
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27
Co
27
Co
1732
1494 C
2926 C
58.93
Transition metal
Cobalt
x
27
Co
Cobalt
Series: Transition metal
Mass: 58.933195(5) g·mol−1
Discovered: 1732
Melting Point: 1494.85 C (1768 K)
Boiling Point: 2926.85 C (3200 K)
View pictures of Cobalt at the Wooden Periodic Table.
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28
Ni
28
Ni
1751
1452 C
2912 C
58.69
Transition metal
Nickel
x
28
Ni
Nickel
Series: Transition metal
Mass: 58.6934(2) g·mol−1
Discovered: 1751
Melting Point: 1452.85 C (1726 K)
Boiling Point: 2912.85 C (3186 K)
View pictures of Nickel at the Wooden Periodic Table.
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29
Cu
29
Cu
antiquity
1084 C
2561 C
63.55
Transition metal
Copper
x
29
Cu
Copper
Series: Transition metal
Mass: 63.546(3) g·mol−1
Discovered: antiquity
Melting Point: 1084.65 C (1357 K)
Boiling Point: 2561.85 C (2835 K)
View pictures of Copper at the Wooden Periodic Table.
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30
Zn
30
Zn
1526
419 C
906 C
65.41
Transition metal
Zinc
x
30
Zn
Zinc
Series: Transition metal
Mass: 65.409(4) g·mol−1
Discovered: 1526
Melting Point: 419.73 C (692 K)
Boiling Point: 906.85 C (1180 K)
View pictures of Zinc at the Wooden Periodic Table.
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31
Ga
31
Ga
1875
29 C
2203 C
69.72
Poor metal
Gallium
x
31
Ga
Gallium
Series: Poor metal
Mass: 69.723(1) g·mol−1
Discovered: 1875
Melting Point: 29.76 C (302 K)
Boiling Point: 2203.85 C (2477 K)
View pictures of Gallium at the Wooden Periodic Table.
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32
Ge
32
Ge
1886
938 C
2832 C
72.64
Metalloid
Germanium
x
32
Ge
Germanium
Series: Metalloid
Mass: 72.64(1) g·mol−1
Discovered: 1886
Melting Point: 938.25 C (1211 K)
Boiling Point: 2832.85 C (3106 K)
View pictures of Germanium at the Wooden Periodic Table.
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33
As
33
As
1250
816 C
613 C
74.92
Metalloid
Arsenic
x
33
As
Arsenic
Series: Metalloid
Mass: 74.9216(2) g·mol−1
Discovered: 1250
Melting Point: 816.85 C (1090 K)
Boiling Point: 613.85 C (887 K)
View pictures of Arsenic at the Wooden Periodic Table.
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34
Se
34
Se
1817
220 C
684 C
78.96
Nonmetal
Selenium
x
34
Se
Selenium
Series: Nonmetal
Mass: 78.96(3) g·mol−1
Discovered: 1817
Melting Point: 220.85 C (494 K)
Boiling Point: 684.85 C (958 K)
View pictures of Selenium at the Wooden Periodic Table.
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35
Br
35
Br
1826
-7 C
58 C
79.90
Halogen
Bromine
x
35
Br
Bromine
Series: Halogen
Mass: 79.904(1) g·mol−1
Discovered: 1826
Melting Point: -7.15 C (266 K)
Boiling Point: 58.85 C (332 K)
View pictures of Bromine at the Wooden Periodic Table.
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36
Kr
36
Kr
1898
-157 C
-153 C
83.80
Noble gas
Krypton
x
36
Kr
Krypton
Series: Noble gas
Mass: 83.798(2) g·mol−1
Discovered: 1898
Melting Point: -157.15 C (116 K)
Boiling Point: -153.22 C (119 K)
View pictures of Krypton at the Wooden Periodic Table.
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37
Rb
37
Rb
1860
39 C
687 C
85.47
Alkali metal
Rubidium
x
37
Rb
Rubidium
Series: Alkali metal
Mass: 85.4678(3) g·mol−1
Discovered: 1860
Melting Point: 39.64 C (312 K)
Boiling Point: 687.85 C (961 K)
View pictures of Rubidium at the Wooden Periodic Table.
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38
Sr
38
Sr
1793
768 C
1381 C
87.62
Alkaline earth metal
Strontium
x
38
Sr
Strontium
Series: Alkaline earth metal
Mass: 87.62(1) g·mol−1
Discovered: 1793
Melting Point: 768.85 C (1042 K)
Boiling Point: 1381.85 C (1655 K)
View pictures of Strontium at the Wooden Periodic Table.
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39
Y
39
Y
1794
1525 C
3335 C
88.91
Transition metal
Yttrium
x
39
Y
Yttrium
Series: Transition metal
Mass: 88.90585(2) g·mol−1
Discovered: 1794
Melting Point: 1525.85 C (1799 K)
Boiling Point: 3335.85 C (3609 K)
View pictures of Yttrium at the Wooden Periodic Table.
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40
Zr
40
Zr
1789
1851 C
4408 C
91.22
Transition metal
Zirconium
x
40
Zr
Zirconium
Series: Transition metal
Mass: 91.224(2) g·mol−1
Discovered: 1789
Melting Point: 1851.85 C (2125 K)
Boiling Point: 4408.85 C (4682 K)
View pictures of Zirconium at the Wooden Periodic Table.
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41
Nb
41
Nb
1801
2467 C
4743 C
92.91
Transition metal
Niobium
x
41
Nb
Niobium
Series: Transition metal
Mass: 92.90638(2) g·mol−1
Discovered: 1801
Melting Point: 2467.85 C (2741 K)
Boiling Point: 4743.85 C (5017 K)
View pictures of Niobium at the Wooden Periodic Table.
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42
Mo
42
Mo
1778
2616 C
4638 C
95.94
Transition metal
Molybdenum
x
42
Mo
Molybdenum
Series: Transition metal
Mass: 95.94(2) g·mol−1
Discovered: 1778
Melting Point: 2616.85 C (2890 K)
Boiling Point: 4638.85 C (4912 K)
View pictures of Molybdenum at the Wooden Periodic Table.
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43
Tc
43
Tc
1937
2196 C
4876 C
98.91
Transition metal
Technetium
x
43
Tc
Technetium
Series: Transition metal
Mass: 98.9063 g·mol−1 (mass of most stable isotope)
Discovered: 1937
Melting Point: 2196.85 C (2470 K)
Boiling Point: 4876.85 C (5150 K)
View pictures of Technetium at the Wooden Periodic Table.
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44
Ru
44
Ru
1844
2246 C
4149 C
101.07
Transition metal
Ruthenium
x
44
Ru
Ruthenium
Series: Transition metal
Mass: 101.07(2) g·mol−1
Discovered: 1844
Melting Point: 2246.85 C (2520 K)
Boiling Point: 4149.85 C (4423 K)
View pictures of Ruthenium at the Wooden Periodic Table.
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45
Rh
45
Rh
1803
1965 C
3694 C
102.91
Transition metal
Rhodium
x
45
Rh
Rhodium
Series: Transition metal
Mass: 102.9055(2) g·mol−1
Discovered: 1803
Melting Point: 1965.85 C (2239 K)
Boiling Point: 3694.85 C (3968 K)
View pictures of Rhodium at the Wooden Periodic Table.
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46
Pd
46
Pd
1803
1551 C
2962 C
106.42
Transition metal
Palladium
x
46
Pd
Palladium
Series: Transition metal
Mass: 106.42(1) g·mol−1
Discovered: 1803
Melting Point: 1551.85 C (1825 K)
Boiling Point: 2962.85 C (3236 K)
View pictures of Palladium at the Wooden Periodic Table.
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47
Ag
47
Ag
antiquity
960 C
2161 C
107.87
Transition metal
Silver
x
47
Ag
Silver
Series: Transition metal
Mass: 107.8682(2) g·mol−1
Discovered: antiquity
Melting Point: 960.85 C (1234 K)
Boiling Point: 2161.85 C (2435 K)
View pictures of Silver at the Wooden Periodic Table.
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48
Cd
48
Cd
1817
321 C
766 C
112.41
Transition metal
Cadmium
x
48
Cd
Cadmium
Series: Transition metal
Mass: 112.411(8) g·mol−1
Discovered: 1817
Melting Point: 321.18 C (594 K)
Boiling Point: 766.85 C (1040 K)
View pictures of Cadmium at the Wooden Periodic Table.
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49
In
49
In
1863
156 C
2071 C
114.82
Poor metal
Indium
x
49
In
Indium
Series: Poor metal
Mass: 114.818(3) g·mol−1
Discovered: 1863
Melting Point: 156.76 C (429 K)
Boiling Point: 2071.85 C (2345 K)
View pictures of Indium at the Wooden Periodic Table.
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50
Sn
50
Sn
antiquity
232 C
2601 C
118.71
Poor metal
Tin
x
50
Sn
Tin
Series: Poor metal
Mass: 118.71(7) g·mol−1
Discovered: antiquity
Melting Point: 232.06 C (505 K)
Boiling Point: 2601.85 C (2875 K)
View pictures of Tin at the Wooden Periodic Table.
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51
Sb
51
Sb
1450
630 C
1586 C
121.76
Metalloid
Antimony
x
51
Sb
Antimony
Series: Metalloid
Mass: 121.76(1) g·mol−1
Discovered: 1450
Melting Point: 630.95 C (904 K)
Boiling Point: 1586.85 C (1860 K)
View pictures of Antimony at the Wooden Periodic Table.
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52
Te
52
Te
1782
449 C
987 C
127.60
Metalloid
Tellurium
x
52
Te
Tellurium
Series: Metalloid
Mass: 127.6(3) g·mol−1
Discovered: 1782
Melting Point: 449.65 C (722 K)
Boiling Point: 987.85 C (1261 K)
View pictures of Tellurium at the Wooden Periodic Table.
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53
I
53
I
1811
113 C
184 C
126.90
Halogen
Iodine
x
53
I
Iodine
Series: Halogen
Mass: 126.90447(3) g·mol−1
Discovered: 1811
Melting Point: 113.55 C (386 K)
Boiling Point: 184.25 C (457 K)
View pictures of Iodine at the Wooden Periodic Table.
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54
Xe
54
Xe
1898
-112 C
-108 C
131.29
Noble gas
Xenon
x
54
Xe
Xenon
Series: Noble gas
Mass: 131.293(6) g·mol−1
Discovered: 1898
Melting Point: -112.15 C (161 K)
Boiling Point: -108.12 C (165 K)
View pictures of Xenon at the Wooden Periodic Table.
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55
Cs
55
Cs
1860
28 C
670 C
132.91
Alkali metal
Caesium
x
55
Cs
Caesium
Series: Alkali metal
Mass: 132.905452(2) g·mol−1
Discovered: 1860
Melting Point: 28.55 C (301 K)
Boiling Point: 670.85 C (944 K)
View pictures of Caesium at the Wooden Periodic Table.
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56
Ba
56
Ba
1808
728 C
1896 C
137.33
Alkaline earth metal
Barium
x
56
Ba
Barium
Series: Alkaline earth metal
Mass: 137.327(7) g·mol−1
Discovered: 1808
Melting Point: 728.85 C (1002 K)
Boiling Point: 1896.85 C (2170 K)
View pictures of Barium at the Wooden Periodic Table.
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72
Hf
72
Hf
1923
2226 C
4602 C
178.49
Transition metal
Hafnium
x
72
Hf
Hafnium
Series: Transition metal
Mass: 178.49(2) g·mol−1
Discovered: 1923
Melting Point: 2226.85 C (2500 K)
Boiling Point: 4602.85 C (4876 K)
View pictures of Hafnium at the Wooden Periodic Table.
Read about Hafnium on Wikipedia.
73
Ta
73
Ta
1802
2995 C
5457 C
180.95
Transition metal
Tantalum
x
73
Ta
Tantalum
Series: Transition metal
Mass: 180.9479(1) g·mol−1
Discovered: 1802
Melting Point: 2995.85 C (3269 K)
Boiling Point: 5457.85 C (5731 K)
View pictures of Tantalum at the Wooden Periodic Table.
Read about Tantalum on Wikipedia.
74
W
74
W
1783
3406 C
5656 C
183.84
Transition metal
Tungsten
x
74
W
Tungsten
Series: Transition metal
Mass: 183.84(1) g·mol−1
Discovered: 1783
Melting Point: 3406.85 C (3680 K)
Boiling Point: 5656.85 C (5930 K)
View pictures of Tungsten at the Wooden Periodic Table.
Read about Tungsten on Wikipedia.
75
Re
75
Re
1925
3176 C
5626 C
186.21
Transition metal
Rhenium
x
75
Re
Rhenium
Series: Transition metal
Mass: 186.207(1) g·mol−1
Discovered: 1925
Melting Point: 3176.85 C (3450 K)
Boiling Point: 5626.85 C (5900 K)
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76
Os
76
Os
1803
3026 C
5011 C
190.23
Transition metal
Osmium
x
76
Os
Osmium
Series: Transition metal
Mass: 190.23(3) g·mol−1
Discovered: 1803
Melting Point: 3026.85 C (3300 K)
Boiling Point: 5011.85 C (5285 K)
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77
Ir
77
Ir
1803
2442 C
4427 C
192.22
Transition metal
Iridium
x
77
Ir
Iridium
Series: Transition metal
Mass: 192.217(3) g·mol−1
Discovered: 1803
Melting Point: 2442.85 C (2716 K)
Boiling Point: 4427.85 C (4701 K)
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78
Pt
78
Pt
1741
1771 C
3824 C
195.08
Transition metal
Platinum
x
78
Pt
Platinum
Series: Transition metal
Mass: 195.084(9) g·mol−1
Discovered: 1741
Melting Point: 1771.85 C (2045 K)
Boiling Point: 3824.85 C (4098 K)
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79
Au
79
Au
antiquity
1064 C
2855 C
196.97
Transition metal
Gold
x
79
Au
Gold
Series: Transition metal
Mass: 196.966569(4) g·mol−1
Discovered: antiquity
Melting Point: 1064.58 C (1337 K)
Boiling Point: 2855.85 C (3129 K)
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80
Hg
80
Hg
antiquity
-39 C
356 C
200.59
Transition metal
Mercury
x
80
Hg
Mercury
Series: Transition metal
Mass: 200.59(2) g·mol−1
Discovered: antiquity
Melting Point: -39.15 C (234 K)
Boiling Point: 356.85 C (630 K)
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81
Tl
81
Tl
1861
303 C
1472 C
204.38
Poor metal
Thallium
x
81
Tl
Thallium
Series: Poor metal
Mass: 204.3833(2) g·mol−1
Discovered: 1861
Melting Point: 303.85 C (577 K)
Boiling Point: 1472.85 C (1746 K)
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82
Pb
82
Pb
antiquity
327 C
1748 C
207.20
Poor metal
Lead
x
82
Pb
Lead
Series: Poor metal
Mass: 207.2(1) g·mol−1
Discovered: antiquity
Melting Point: 327.65 C (600 K)
Boiling Point: 1748.85 C (2022 K)
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83
Bi
83
Bi
1450
271 C
1563 C
208.98
Poor metal
Bismuth
x
83
Bi
Bismuth
Series: Poor metal
Mass: 208.9804(1) g·mol−1
Discovered: 1450
Melting Point: 271.52 C (544 K)
Boiling Point: 1563.85 C (1837 K)
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84
Po
84
Po
1898
253 C
961 C
208.98
Metalloid
Polonium
x
84
Po
Polonium
Series: Metalloid
Mass: 208.9824 g·mol−1 (mass of most stable isotope)
Discovered: 1898
Melting Point: 253.85 C (527 K)
Boiling Point: 961.85 C (1235 K)
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85
At
85
At
1940
301 C
336 C
209.99
Halogen
Astatine
x
85
At
Astatine
Series: Halogen
Mass: 209.9871 g·mol−1 (mass of most stable isotope)
Discovered: 1940
Melting Point: 301.85 C (575 K)
Boiling Point: 336.85 C (610 K)
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86
Rn
86
Rn
1898
-71 C
-61 C
222.02
Noble gas
Radon
x
86
Rn
Radon
Series: Noble gas
Mass: 222.0176 g·mol−1 (mass of most stable isotope)
Discovered: 1898
Melting Point: -71.05 C (202 K)
Boiling Point: -61.85 C (211 K)
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87
Fr
87
Fr
1939
26 C
676 C
223.02
Alkali metal
Francium
x
87
Fr
Francium
Series: Alkali metal
Mass: 223.0197 g·mol−1 (mass of most stable isotope)
Discovered: 1939
Melting Point: 26.85 C (300 K)
Boiling Point: 676.85 C (950 K)
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88
Ra
88
Ra
1898
699 C
1736 C
226.03
Alkaline earth metal
Radium
x
88
Ra
Radium
Series: Alkaline earth metal
Mass: 226.0254 g·mol−1 (mass of most stable isotope)
Discovered: 1898
Melting Point: 699.85 C (973 K)
Boiling Point: 1736.85 C (2010 K)
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104
Rf
104
Rf
1964
?
?
261.11
Transition metal
Rutherfordium
x
104
Rf
Rutherfordium
Series: Transition metal
Mass: 261.1087 g·mol−1 (mass of most stable isotope)
Discovered: 1964
Melting Point: Unknown
Boiling Point: Unknown
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105
Db
105
Db
1967
?
?
262.11
Transition metal
Dubnium
x
105
Db
Dubnium
Series: Transition metal
Mass: 262.1138 g·mol−1 (mass of most stable isotope)
Discovered: 1967
Melting Point: Unknown
Boiling Point: Unknown
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106
Sg
106
Sg
1974
?
?
263.12
Transition metal
Seaborgium
x
106
Sg
Seaborgium
Series: Transition metal
Mass: 263.1182 g·mol−1 (mass of most stable isotope)
Discovered: 1974
Melting Point: Unknown
Boiling Point: Unknown
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107
Bh
107
Bh
1976
?
?
262.12
Transition metal
Bohrium
x
107
Bh
Bohrium
Series: Transition metal
Mass: 262.1229 g·mol−1 (mass of most stable isotope)
Discovered: 1976
Melting Point: Unknown
Boiling Point: Unknown
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108
Hs
108
Hs
1984
?
?
265.00
Transition metal
Hassium
x
108
Hs
Hassium
Series: Transition metal
Mass: 265.0 g·mol−1 (mass of most stable isotope)
Discovered: 1984
Melting Point: Unknown
Boiling Point: Unknown
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109
Mt
109
Mt
1982
?
?
266.00
Transition metal
Meitnerium
x
109
Mt
Meitnerium
Series: Transition metal
Mass: 266.0 g·mol−1 (mass of most stable isotope)
Discovered: 1982
Melting Point: Unknown
Boiling Point: Unknown
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110
Ds
110
Ds
1994
?
?
269.00
Transition metal
Darmstadtium
x
110
Ds
Darmstadtium
Series: Transition metal
Mass: 269.0 g·mol−1 (mass of most stable isotope)
Discovered: 1994
Melting Point: Unknown
Boiling Point: Unknown
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111
Rg
111
Rg
1994
?
?
272.00
Transition metal
Roentgenium
x
111
Rg
Roentgenium
Series: Transition metal
Mass: 272.0 g·mol−1 (mass of most stable isotope)
Discovered: 1994
Melting Point: Unknown
Boiling Point: Unknown
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