Chemistry

Question Analysis
This question involves VSEPR theory. The main focus is on identifying which molecule has a linear molecular geometry.

Key Concept Explanation
A linear molecular geometry occurs when the central atom has two bonding pairs and no lone pairs, resulting in an ideal bond angle of 180°.

Option Analysis
1. H₂O
Valence electrons: O: 6 valence electrons. H: 1 valence electron each.
Electron domains: Two bonding pairs and two lone pairs.
Result: bent.
2. CO₂
Valence electrons: C: 4 valence electrons. O: 6 valence electrons each.
Electron domains: Two bonding regions (two double bonds) and no lone pairs.
Result: linear.
3. SO₂
Valence electrons: C: 4 valence electrons. O: 6 v...