Question

Which of the following statements is/are true? 1. PH₃ and BiCl₃ do not exist. 2. π-π bond is present in SO₂. 3. I₃^+ has bent geometry. 4. SeF₄ and CH₄ have same shape.

• A. 1, 2, 3
• B. 1, 3
• C. 1, 3, 4
• D. 1, 2, 4

Hint:

Always use VSEPR theory to predict molecular geometry.

Answer 1

The Correct Option is B

Step 1: PH₃ exists but BiCl₃ does not as a stable molecule.
Step 2: SO₂ has pπ-pπ bonding, not π-π.
Step 3: I₃^+ has bent geometry.
Step 4: SeF₄ is seesaw while CH₄ is tetrahedral.