Question

The correct non-linear and iso-structural pair is

• A. SCl₂, I₃⁻
• B. SCl₂, I₃⁺
• C. SCl₂, ClF₂⁻
• D. I₃⁺, ClF₂⁻

Answer 1

Answer: (B)

SCl₂, I₃⁺

Answer 2

1. SCl₂: Central S has 2 bonded atoms and 2 lone pairs (sp³ hybridization), resulting in a bent (non-linear) molecular geometry.
2. I₃⁻: Central I has 2 bonded atoms and 3 lone pairs (sp³d hybridization), resulting in a linear molecular geometry.
3. I₃⁺: Central I has 2 bonded atoms and 2 lone pairs (sp³ hybridization), resulting in a bent (non-linear) molecular geometry.
4. ClF₂⁻: Central Cl has 2 bonded atoms and 3 lone pairs (sp³d hybridization), resulting in a linear molecular geometry.

The pair (SCl₂, I₃⁺) consists of two non-linear molecules with the same molecular geometry (bent) and hybridization (sp³), making them iso-structural.