The incorrect statement about is:

Question

The incorrect statement about  is:

Canvas Classes · Accepted Answer

Analysis:

(1) INCORRECT — The B–H–B bridging angle in  is approximately 84° (not 120°). The 120° value would correspond to sp² hybridization, but the bridging geometry is more constrained. ✗ → This is the incorrect statement.

(2) CORRECT — Terminal B–H bonds (~119 pm) are shorter than bridging B–H–B bonds (~133 pm). ✓

(3) CORRECT — Terminal B–H bonds use sp³ orbitals with more s-character; bridging bonds involve 3c-2e bonds with more p-character. ✓

(4) CORRECT —  is electron deficient (only

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