Question

Increase the following in the order of increasing bond angles:

BeCl2, BF3, NH3, NH4+, NH2–​

Answer 1

Answer:

BeCl₂ > BF₃ > NH₄⁺ > NH₃ > NH₂⁻

Explanation:

According to VSEPR,

1. BeCl₂ is a linear molecule. So Bond angle = 180°
2. BF₃ is trigonal planar, with each bond having an angle of 120°
3. NH₃ is trigonal pyramidal and the angle is 107°
4. NH₄⁺ is tetrahedral and the tetrahedral angle is 109°28'
5. NH₂⁻  is angular and the angle is 104.5°