Question

question 11 (1 point) based on the vsepr theory, which one of the following molecules is linear? bf3 hcn pcl5 no2- so2

Explanation:

Step1: Analyze BF₃

BF₃ has 3 bonding pairs and 0 lone - pairs around the central B atom. According to VSEPR theory, it has a trigonal - planar geometry.

Step2: Analyze HCN

HCN has 2 bonding pairs (C - H and C≡N) and 0 lone - pairs around the central C atom. According to VSEPR theory, it has a linear geometry.

Step3: Analyze PCl₅

PCl₅ has 5 bonding pairs and 0 lone - pairs around the central P atom. According to VSEPR theory, it has a trigonal - bipyramidal geometry.

Step4: Analyze NO₂⁻

NO₂⁻ has 2 bonding pairs and 1 lone - pair around the central N atom. According to VSEPR theory, it has a bent geometry.

Step5: Analyze SO₂

SO₂ has 2 bonding pairs and 1 lone - pair around the central S atom. According to VSEPR theory, it has a bent geometry.

Answer:

HCN