Q.
Among CH4,CO2,H2O and SO2 the bond angle is the highest in
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KVPYKVPY 2009Chemical Bonding and Molecular Structure
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Solution:
As the number of lone pairs of electrons increases, bond angle decreases.
The number of lone pair in CH4,CO2,H2O and SO2 respectively are 0,0,2 and 1.So,CH4 and CO2 will have the maximum bond angle.
Also, multiple bond orbitals repel other orbitals more strongly than single bond orbital.
Thus, the bond angle will increase.
As CH4 has single bonds whereas CO2 has double bonds.
Therefore, CO2 has the highest bond angle.