Question

The main axis of the diatomic molecule is z, molecular orbital px and py overlap to form which of the following orbitals.

• A. $\mathrm{\pi }$ molecular orbital
• B. $\mathrm{\sigma }$ molecular orbital
• C. $\mathrm{\delta }$ molecular orbital
• D. No bond will form

Answer 1

The correct option is A

$\mathrm{\pi }$ molecular orbital

The explanation for the correct answer

(A) $\mathbf{\pi }$molecular orbital

1. If the main axis is the Z axis, then the ${\mathrm{P}}_{\mathrm{x}}$ and ${\mathrm{P}}_{\mathrm{y}}$ orbital overlap to form a $\mathrm{\pi }$bond.
2. Hence Option (A) is correct.

The explanation for the incorrect answer

(B) $\mathbf{\delta }$ Molecular orbital

1. A Delta bond is a type of chemical bond where four lobes of one involved atomic orbital tend to overlap with four lobes of another involved atomic orbital to form a Delta bond.
2. Hence option (B) is incorrect.

(C) $\mathbf{\sigma }$Bonding orbital

1. This type of covalent bond is formed by the head-on positive overlap of atomic orbitals along the internuclear axis.
2. Hence option (C) is incorrect.

(D) No bond will form

1. In general, there is less probability of formation of any types of bonds.
2. Hence, option (D) is incorrect.

Therefore, the overlap between ${\mathrm{P}}_{\mathrm{x}}$ and ${\mathrm{P}}_{\mathrm{y}}$ orbital gives a $\mathrm{\pi }$bond. Hence option (A) is correct.