Question

how many domains does this molecule have around the central atom? h - c ≡ n:

Explanation:

Step1: Identify the central atom

In \(H - C\equiv N:\), the central atom is \(C\).

Step2: Analyze bonding around \(C\)

Carbon (\(C\)) forms a single bond with \(H\) (\(C - H\)) and a triple bond with \(N\) (\(C\equiv N\)). A single bond is 1 bonding domain and a triple bond also counts as 1 bonding domain (because multiple - bonds are considered as one domain for the purpose of determining electron - domain geometry).

Answer:

2 bonding