Element 2 - Helium / Helium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

3

3.0160

0.000138

1/2

4

4.0026

99.999862

3/2-

(* = unstable isotope)

Mass Number	Atomic Mass	% Abundance	Nuclear Spin
3	3.0160	0.000138	1/2
4	4.0026	99.999862	3/2-

Electron Configuration:

1s²

Relative Atomic Mass:

4.0026

State (25°C, 1 atm):

gas, non-metal

Density:

0.1785 kg/m³

Melting Temperature:

?

Boiling Temperature:

4.216 K

Electron Configuration:	1s²
Relative Atomic Mass:	4.0026
State (25°C, 1 atm):	gas, non-metal
Density:	0.1785 kg/m³
Melting Temperature:	?
Boiling Temperature:	4.216 K