June 02, 2020, 07:28:30 AM
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Topic: Stibine (SbH3) has a trigonal pyramidal structure but it has 91.7o bond angles?  (Read 2866 times)

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Offline foorium

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The orbital structure is based off of tetrahedral with 1 lone pair therefore it should be 107o but Wikipedia says its 91.7? why is this?

Offline Schrödinger

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As you go down the group towards heavier elements, you find that the p-orbitals start participating in the bonding rather than the atomic orbitals getting hybridized.

I don't exactly know what it's called, but I remember having read this under 'Drago's rule' somewhere. But I'm not really sure. Someone please verify this.
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