Question

A Lewis electron structure of a molecule is shown.

mc024-1.jpg

Judging by the electron domain geometry, which type of hybrid orbitals does this molecule have?
s
sp
sp2
sp3

Answer 1

I can’t see the image you referenced. Tell me the electron-domain geometry (how many electron domains around the central atom: 2, 3, or 4?) or re-upload the picture.

Rule you can use:
- 2 electron domains (linear) → sp
- 3 electron domains (trigonal planar) → sp2
- 4 electron domains (tetrahedral) → sp3

So if the geometry is trigonal planar, pick sp2; if linear, pick sp; if tetrahedral, pick sp3. (There is no “s” hybridization for main‑group molecules.)