Question

Which of the following molecules, has the largest bond angle around the central atom?

• A. ${{H}_{2}}O$
• B. $S{{O}_{2}}$
• C. ${{H}_{2}}S$
• D. ${{H}_{2}}Se$

Answer 1

Answer: (A)

${{H}_{2}}O$

Answer 2

${{H}_{2}}O$ has the largest bond angle among VIA group hydrides. The reason is the high electronegativity of oxygen atom due to which bonding electron pair remains closer to oxygen atom in ${{H}_{2}}O$ molecule. Hence, the repulsion between bonding ${{e}^{-}}$ is maximum in ${{H}_{2}}O$ due to which the bond-angle is maximum (104.5?? in ${{H}_{2}}O$ .