Question

Assertion : In $CO_{2}$ molecule, $C$-atom undergoes $sp^{2}$ hybridisation.
Reason : $CO_{2}$ molecule has net dipole moment.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (D)

In $CO_{2}$ molecule, carbon atom undergoes $sp$- hybridisation.

The two $sp$-hybridised orbitals of $C$-atom overlap with two $p$-orbitals of $O$-atoms to make $2$ $\sigma$ bonds while other two electrons of $C$-atom are involved in $p\pi-p\pi$ bonding with oxygen atom. Hence, it is linear in shape with equal $C— O$ bond lengths and no dipole moment.