| Group | |||
|---|---|---|---|
| 1 | 2 | ||
| Period | 1 |
1
H
Hydrogen
1s1
|
2
He
Helium
1s2
Name origin:
the Greek 'helios' meaning sun
Atomic weight (amu):
4.002602
Specific heat capacity (J/gK):
5.193
Density (g/cm3):
0.0001785
Melting point (K):
0.956
Boiling point (K):
4.22
Electronegativity (Pauling):
unknown
Abundance (mg/kg):
0.008
|
| 2 |
4
Be
Beryllium
[He] 2s2
|
||
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