Question

how many electron domains are around the central tin atom in sncl2? 6 4 5 2 3

Explanation:

Step1: Determine bonding and non - bonding pairs

Tin (Sn) in $SnCl_2$ has 4 valence electrons. It forms 2 bonds with Cl atoms. The number of non - bonding electrons on Sn is $\frac{4 - 2\times1}{2}=1$ (using the formula for non - bonding electrons: $\frac{V - N\times B}{2}$, where V is valence electrons of central atom, N is number of surrounding atoms, B is number of bonds per surrounding atom).

Step2: Calculate electron domains

Electron domains = bonding domains+non - bonding domains. Bonding domains = 2 (from 2 Sn - Cl bonds), non - bonding domains = 1. So, electron domains = 2 + 1=3.

Answer:

3