FRANCIUM

 FRANCIUM  (87) (Solid)  212(19.3 minutes)EC,A  222(15 minutes)B-

223(21.8 minutes)B-

Atomic radius:

Atomic volume:

Atomic weight:(223 - Most stable isotope) (Based on Carbon 12)

Boiling point:950Deg. Kelvin

Covalent radius:

Crystal structure:Cubic,body centered

Density:

Electrical conductivity:.03 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin

Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)p(6)

4f(14)5d(10)6s(2)p(6)7s(1)

Electronegativity:0.7 (Pauling's)

First ionization potential:

Heat of fusion:

Heat of vaporization:

Melting point:300Deg. Kelvin

Oxidation states:1 very basic

Specific heat capacity:

Thermal conductivity:.15 W cm(x.1( K(x.1) at 300Deg. Kelvin

Description:A radioactive element of the alkali-metal group discovered as a

disintegration product of actinium and obtained artificially by the bombardment

of thorium with protons.

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