Question

The condition(s) for the formation of an electrovalent bond is/are:

• A. the atom which changes into cation ($+$ ive ion) should possess $1,2$ or $3$ valency electrons
• B. the atom which changes into anion ($-$ ve ion) should possess $5,6$ or $7$ electrons in the valency shell
• C. both $A$ and $B$
• D. none of the above

Answer 1

The correct option is C both $A$ and $B$

The conditions for the formation of an electrovalent bond are as follows:

• The atom which changes into cation ($+$ ive ion) should possess $1,2$ or $3$ valency electrons. It will loose these electrons to form cation with $+1,+2$ or $+3$ charge.

• The atom which changes into anion ($-$ ve ion) should possess $5,6$ or $7$ electrons in the valency shell. It will gain $1,2$ or $3$ electrons to form anion with $-1,-2$ or $-3$ charge.