Radium

Symbol

Ra

Atomic number

88

Atomic mass

226.025

Thermal conductivity

0.186

Atomic radius

...

Covalent radius

...

Density

5.00

Atomic volume

45.2

Melting point

973

Oxidation states

2

Boiling point

1413

Stable isotopes

0

Heat of vapor.

...

Electronegativity

0.9

Heat of fusion

...

First ionization

...

Specific heat

...

Electrical conduct.

...

Electron configuration

General description

Index

Periodic Table

Chemistry concepts

R Nave

Radium

Radium is a metal whose compounds are similar to those of Barium.

Radium is notable primarily for its radioactivity.

Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 26,32

R Nave

Radium Nuclear Data

Z	A	Atomic Mass (u)	Nuclear Mass(GeV/c2	Binding Energy(MeV)	Spin	Natural Abund.	Half-life	Decay	Q MeV
88	206	206.003800	191.8479	1590.3	0	...	0.4s	a	7.42
88	216	216.003509	201.1626	1671.3	0	...	0.18s	a	9.53
88	218	218.007118	203.0290	1684.1	0	...	14ms	a	8.55
88	220	220.011004	204.8956	1696.6	0	...	23ms	a	7.59
88	222	222.015353	206.7627	1708.7	0	...	38s	a	5.59
88	223	223.018501	207.6971	1713.9	3/2	...	11.43d	a	5.98
88	224	224.020186	208.6302	1720.4	0	...	3.66d	a	5.79
88	225	225.023604	209.5649	1725.2	3/2	...	14.8d	b-	0.37
88	226	226.025403	210.4981	1731.6	0	...	1.599ky	a	4.87
88	228	228.031064	212.3663	1742.5	0	...	5.75y	b-	0.045

Index

Periodic Table

Chemistry concepts

Reference
Rohlf

R Nave