Element 90 - Thorium / Thorium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

228 *

228.0287

traces

0

229 *

229.0318

0

5/2+

230 *

230.0331

traces

0

231 *

231.0363

traces

5/2+

232 *

232.0381

100

0

234 *

234.0366

traces

0

(* = unstable isotope)

Mass Number	Atomic Mass	% Abundance	Nuclear Spin
228 *	228.0287	traces	0
229 *	229.0318	0	5/2+
230 *	230.0331	traces	0
231 *	231.0363	traces	5/2+
232 *	232.0381	100	0
234 *	234.0366	traces	0

Electron Configuration:

[Rn] 6d² 7s²

Relative Atomic Mass:

232.04

State (25°C, 1 atm):

solid, metal

Density:

11720 kg/m³

Melting Temperature:

2023 K

Boiling Temperature:

5060 K

Electron Configuration:	[Rn] 6d² 7s²
Relative Atomic Mass:	232.04
State (25°C, 1 atm):	solid, metal
Density:	11720 kg/m³
Melting Temperature:	2023 K
Boiling Temperature:	5060 K