Total number of species from the following with central atom utilising hybrid orbitals for bonding is

Question

Total number of species from the following with central atom utilising  hybrid orbitals for bonding is

Canvas Classes · Accepted Answer

hybridization requires 3 electron pairs (bonds + lone pairs) on central atom, giving trigonal planar geometry.

Step 1 — Analyse each species:

| Species | Central atom | Bonds | Lone pairs | Hybridization |
|---------|-------------|-------|-----------|---------------|
|  | N | 3 | 1 | sp³ ✗ |
|  | S | 2 | 1 | sp² ✓ |
|  | Si | 4 (network) | 0 | sp³ ✗ |
|  | Be | 2 | 0 | sp ✗ |
|  | C | 2 | 0 | sp ✗ |
|  | C | 3 | 0 | sp² ✓ |
|  | B | 3 | 0 | sp² ✓ |
| HCHO | C | 3 | 0 | sp² ✓ |
|  | C | 3 | 0 |

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