|
Promethium
|
Pm
|
61
|
Lanthanide
|
Prometheus of Greek mythology who stole fire from the Gods and gave it to humans
|
|
6
|
|
|
7.26
|
1315.00
|
3273.00
|
|
1.13
|
0.00
|
|
Radium
|
Ra
|
88
|
Alkaline earth metal
|
the Latin radius, 'ray'
|
2
|
7
|
|
|
5.50
|
973.00
|
2010.00
|
0.09
|
0.90
|
0.00
|
|
Francium
|
Fr
|
87
|
Alkali metal
|
Francia, the New Latin name for France
|
1
|
7
|
|
|
1.87
|
300.00
|
950.00
|
|
0.70
|
0.00
|
|
Radon
|
Rn
|
86
|
Noble gas
|
From radium, as it was first detected as an emission from radium during radioactive decay
|
18
|
6
|
|
|
0.01
|
202.00
|
211.30
|
0.09
|
2.20
|
0.00
|
|
Hydrogen
|
H
|
1
|
Reactive nonmetal
|
composed of the Greek elements hydro- and -gen meaning 'water-forming'
|
1
|
1
|
1.01
|
0.00
|
0.00
|
14.01
|
20.28
|
14.30
|
2.20
|
1400.00
|
|
Helium
|
He
|
2
|
Noble gas
|
the Greek helios, 'sun'
|
18
|
1
|
4.00
|
0.00
|
0.00
|
|
4.22
|
5.19
|
|
0.01
|
|
Lithium
|
Li
|
3
|
Alkali metal
|
the Greek lithos, 'stone'
|
1
|
2
|
6.94
|
0.00
|
0.53
|
453.69
|
1560.00
|
3.58
|
0.98
|
20.00
|
|
Beryllium
|
Be
|
4
|
Alkaline earth metal
|
beryl, a mineral
|
2
|
2
|
9.01
|
0.00
|
1.85
|
1560.00
|
2742.00
|
1.83
|
1.57
|
2.80
|
|
Boron
|
B
|
5
|
Metalloid
|
borax, a mineral
|
13
|
2
|
10.81
|
0.00
|
2.34
|
2349.00
|
4200.00
|
1.03
|
2.04
|
10.00
|
|
Carbon
|
C
|
6
|
Reactive nonmetal
|
the Latin carbo, 'coal'
|
14
|
2
|
12.01
|
0.00
|
2.27
|
3800.00
|
4300.00
|
0.71
|
2.55
|
200.00
|