Element 61 - Promethium / Promethium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

145 *

144.9127

0

5/2+

146 *

145.9147

0

3-

147 *

146.9151

0

7/2+

149 *

148.9183

0

7/2+

151

150.9212

0

5/2+

(* = unstable isotope)

Mass Number	Atomic Mass	Nuclear Spin
145 *	144.9127	5/2+
146 *	145.9147	3-
147 *	146.9151	7/2+
149 *	148.9183	7/2+
151	150.9212	5/2+

Electron Configuration:

[Xe] 5f⁵ 6s²

Relative Atomic Mass:

146.92

State (25°C, 1 atm):

solid, metal

Density:

7220 kg/m³

Melting Temperature:

1441 K

Boiling Temperature:

~3000 K

Electron Configuration:	[Xe] 5f⁵ 6s²
Relative Atomic Mass:	146.92
State (25°C, 1 atm):	solid, metal
Density:	7220 kg/m³
Melting Temperature:	1441 K
Boiling Temperature:	~3000 K