The number of molecule(s) or ion(s) from the following having non-planar structure is

Question

Canvas Classes · Accepted Answer

Non-planar structures have atoms not all in the same plane.

Step 1 — Analyse each species:

| Species | Shape | Planar? |
|---------|-------|--------|
|  | Trigonal planar | Planar ✗ |
|  | Non-planar (dihedral angle) | Non-planar ✓ |
|  | Trigonal planar | Planar ✗ |
|  | Pyramidal | Non-planar ✓ |
|  | Square planar | Planar ✗ |
|  | See-saw | Non-planar ✓ |
|  | Pyramidal | Non-planar ✓ |
|  | Tetrahedral | Non-planar ✓ |
|  | Trigonal planar | Planar ✗ |
|  | Tetrahedral | Non-planar ✓ |

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