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  4. The correct order of bond angles (smallest first) in H2S, NH3, BF3 and SiH4 is

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Q. The correct order of bond angles (smallest first) in $ H_2S, NH_3, BF_3 $ and $ SiH_4 $ is

AMUAMU 2016Chemical Bonding and Molecular Structure

Solution:

Presence of lone pairs of electrons greatly affects the bond angle. As the number of lone pairs of electrons increases, bond angle decreases. Thus, the correct order of bond angles,
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