Number of lone pairs of electrons in the central atom of $\mathrm{SCl}_{2}, \mathrm{O}_{3}, \mathrm{ClF}_{3}$ and $\mathrm{SF}_{6}$, respectively, are :

JEE Main · 2022 · 29 Jul 2022 · Shift 1 · Chemical Bonding and Molecular Structure

Number of lone pairs of electrons in the central atom of

SCl_{2}, O_{3}, ClF_{3}

and

SF_{6}

, respectively, are :

Answer: (B)

Lone pairs on each central atom:

SC l_{2}

S has 2 bond pairs + 2 lone pairs (bent) => 2;

O_{3}

central O has 2 bond pairs + 1 lone pair (bent) => 1;

Cl F_{3}

Cl has 3 bond pairs + 2 lone pairs (T-shaped,

A X_{3} E_{2}

) => 2;

S F_{6}

S has 6 bond pairs + 0 lone pairs (octahedral) => 0. Hence 2, 1, 2 and 0.

JEE Main · 2022 · 29 Jul 2022 · Shift 1 · Single correct option