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Which one of the alkali metal forms only...

Which one of the alkali metal forms only, the normal oxide, `M_(2)O` ?

A

Li

B

Na

C

K

D

Rb

Text Solution

Verified by Experts

The correct Answer is:
A
Only Li forms `Li_(2)O` due to more lattice enthalpy of smallsized `Li^(o+)` and `O^(2-)` ions.
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