Question

linear
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part b
trigonal planar

Explanation:

• For a linear molecular geometry, the hybridization is \(sp\). In \(sp\) hybridization, one \(s\) orbital and one \(p\) orbital mix to form two \(sp\) hybrid orbitals which are oriented at \(180^{\circ}\) (linear).
• For a trigonal - planar molecular geometry, the hybridization is \(sp^{2}\). One \(s\) orbital and two \(p\) orbitals mix to form three \(sp^{2}\) hybrid orbitals which are oriented at \(120^{\circ}\) in a plane (trigonal - planar).

Answer:

For linear: \(sp\)
For trigonal planar: \(sp^{2}\)