Element: caesium |
Name : caesium |
Symbol : Cs |
Atomicnumber : 55 |
Relativeatomicmass : 132.90545196 (6) |
Standardstate : solid at 298 K (but melts only slightly above this temperature) |
Appearance : silvery gold |
Classification : Metallic |
Groupinperiodictable : 1 |
Groupname : Alkali metal |
Periodinperiodictable : 6 |
Blockinperiodictable : s |
Shellstructure : 2.8.18.18.8.1 |
CASRegistry : 7440-46-2 |
Description : The metal is characterised by a spectrum containing two bright lines in the blue (accounting for its name). It is silvery gold, soft, and ductile. |