Element 91 - Protactinium / Protactinium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

231 *

231.0359

traces

3/2-

232 *

232.0386

0

3/2-

233 *

233.0402

0

3/2-

234 *

233.0433

traces

4+

(* = unstable isotope)

Mass Number	Atomic Mass	% Abundance	Nuclear Spin
231 *	231.0359	traces	3/2-
232 *	232.0386	0	3/2-
233 *	233.0402	0	3/2-
234 *	233.0433	traces	4+

Electron Configuration:

[Rn] 5f² 6d¹ 7s²

Relative Atomic Mass:

231.04

State (25°C, 1 atm):

solid, metal

Density:

15370 kg/m³

Melting Temperature:

2113 K

Boiling Temperature:

4300 K

Electron Configuration:	[Rn] 5f² 6d¹ 7s²
Relative Atomic Mass:	231.04
State (25°C, 1 atm):	solid, metal
Density:	15370 kg/m³
Melting Temperature:	2113 K
Boiling Temperature:	4300 K