JEE MAIN - Chemistry (2016 - 10th April Morning Slot - No. 18)
The bond angle H - X - H is the greatest in the compound :
CH4
NH3
H2O
PH3
Explanation
CH4 - sp3 hybridisation - Bond angle (109o28')
NH3 - sp3 hybridisation - Bond angle ( 107.8o)
H2O - sp3 hybridisation - Bond angle ( 104.5o)
PH3 - No hybridisation - Bond angle ( 90o)
Note : According to DRAGO RULE, lone pair of electrons are in pure s- orbital of the atom P. That is why PH3 has no hybridisation.
NH3 - sp3 hybridisation - Bond angle ( 107.8o)
H2O - sp3 hybridisation - Bond angle ( 104.5o)
PH3 - No hybridisation - Bond angle ( 90o)
Note : According to DRAGO RULE, lone pair of electrons are in pure s- orbital of the atom P. That is why PH3 has no hybridisation.
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