Question

determine the number of electron groups around the central atom for each of the following molecules.
part b
sbr₂
express your answer as an integer.

Explanation:

Step1: Determine the valence electrons of central atom

The central atom in \(SBr_2\) is \(S\). Sulfur (\(S\)) has \(6\) valence electrons.

Step2: Determine the number of bonding pairs

Bromine (\(Br\)) has \(7\) valence electrons. Each \(Br\) forms a single bond with \(S\). So, there are \(2\) bonding pairs (since there are \(2\) \(Br\) atoms bonded to \(S\)).

Step3: Determine the number of lone pairs

Using the formula: Number of lone pairs \(=\frac{Valence\ electrons - Number\ of\ bonding\ pairs\times2}{2}\). Substituting the values: \(\frac{6 - 2\times2}{2}=\frac{6 - 4}{2}=1\) lone pair.

Step4: Calculate the number of electron groups

Number of electron groups \(=\) Number of bonding pairs \(+\) Number of lone pairs. So, \(2 + 1=4\)

Answer:

\(4\)