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mineralogy elements Ra Radium

Ra - Radium - ALKALINE EARTH METAL

700°
1140°
226
2
88
Ra
[Rn] 7s2
2
8
18
32
18
8
2
0.9
5.2784
Synthetic
Radioactive
Liquid
Gaseous
Radium Electronic configuration diagram
Electronic configuration diagram

Name Radium
Number 88
Atomic 226
Symbol Ra
Fusion 700
Boiling 1140
Density 5.5
Period 7
Group 2
Discovery 1898 Pierre and Marie Curie
Abundance 0.001
Radius 0
Electronegativity 0.9
Ionization 5.2784
Number of isotopes 15
Electronic configuration [Rn] 7s2
Oxidation states 2
Electron by energy level 2,8,18,32,18,8,2