The correct increasing order for bond angles among , and is:

Question

The correct increasing order for bond angles among ,  and  is:

Canvas Classes · Accepted Answer

Step 1 — Hybridization and lone pairs:

| Molecule | Bonds | Lone pairs | Hybridization | Bond angle |
|----------|-------|-----------|---------------|------------|
|  | 3 | 0 | sp² | 120° |
|  | 3 | 1 | sp³ | ~97° |
|  | 3 | 2 | sp³d | ~87° |

Step 2 — Reasoning:
- : No lone pairs, sp² → maximum bond angle (120°)
- : 1 lone pair compresses bond angle below tetrahedral (~97°)
- : 2 lone pairs (T-shaped) → even smaller bond angle (~87°)

Increasing order:

Answer: Option (2)

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