Question

Which of the following statement is/are wrong in case of sodium chloride $NaCl$?

• A. Valency of chlorine is $+1$
• B. Valency of chlorine is $-1$
• C. Valency of sodium is $+1$
• D. Valency of sodium is $-1$

Answer 1

Answer: (A), (D)

The correct options are
A

Valency of chlorine is $+1$

D

Valency of sodium is $-1$

Sodium is a metal so it donates the electron to become stable while chlorine is a non-metal so it accepts the electron to become stable.

Sodium atom donates one electron to the chlorine atom from its valence shell. Therefore, the valency of sodium is $+1$. The chlorine atom accepts one electron from the sodium atom into its valence shell (in order to complete its octet). Therefore, the valency of chlorine is $-1$