Question

Assertion (A) : sodium formss a monovalent ion.
Reason (R ) : Sodium loses only one electron from second last shell.
A. Both A and R are true and R is the correct explanation For A.
B. Both A and R are true but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Answer 1

Correct Answer - 3
Sodium loses only one electron from its outer most shell or valence shell and forms monovalent ion.