Element 55 - Caesium / Cesium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

133

132.9054

100

7/2+

134 *

133.9067

0

4

135 *

134.9059

0

7/2+

137

136.9071

0

7/2+

(* = unstable isotope)

Mass Number	Atomic Mass	% Abundance	Nuclear Spin
133	132.9054	100	7/2+
134 *	133.9067	0	4
135 *	134.9059	0	7/2+
137	136.9071	0	7/2+

Electron Configuration:

[Xe] 6s¹

Relative Atomic Mass:

132.91

State (25°C, 1 atm):

solid, metal

Density:

1873 kg/m³

Melting Temperature:

301.55 K

Boiling Temperature:

951.6 K

Electron Configuration:	[Xe] 6s¹
Relative Atomic Mass:	132.91
State (25°C, 1 atm):	solid, metal
Density:	1873 kg/m³
Melting Temperature:	301.55 K
Boiling Temperature:	951.6 K