38
87.62 u
Sr
Strontium
Alkaline Earth Metal
Atomic Structure
Physical State
Group
2
Period
5
Block
s
Electron Configuration
[Kr] 5s²
Physical Properties
Atomic Mass:
87.62 u
Electronegativity:
0.95
Atomic Radius:
249 pm
Ionization Energy:
5.695 eV
Density:
2.64 g/cm³
Melting Point:
1050 K
Boiling Point:
1655 K
Historical Information
Discovered By:
William Cruickshank
Year Discovered:
1790