Question

The molecules of ch4 nh3 and h2o are involved sp3 hybridization of the central atom but the bond angles is this molecules are 109 degree 28 ii 107 degree 18 second and 104° 30 second respectively explain

Answer 1

Each molecule have 4 pairs electrons so, the main shape is tetrahydral

In CH4 all pairs are bonded pairs so the repulsive between bonds in minimam at angle 109.5 dgree

In NH3 the 4 pairs are 3 bonded pairs and one lone pair , the lone pair has great repulsive force so the angle between bond decreases to 107dgree

In H2O , the 4 pairs are 2 bonded pairs and 2 lone pairs , so the repulsive force between electrons is greater , so the angle between bond decreases to 104.5 dgree

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