Question

Ch4 and nh3 are both sp3 hybridisation but the bond angle of nh3 is lower why

Answer 1

Answer:

All three molecules have four pairs of electrons around their central atom .

As a result , they all have a tetrahedral arrangment of electron pairs around the central atom .

The bond angle in methane , CH4 , is the tetrahedral angle , i . e . 109 . 5° ( 109° 28 ' ) .

Ammonia , NH3 , contains a lone pair of electrons , which repels the bonding electrons to give a bond angle of 1079 . The atoms have a trigonal pyramidal arrangement .

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