Question
Question: The correct increasing order for bond angles among BF3, PF3 and ClF3 is :...
The correct increasing order for bond angles among BF3, PF3 and ClF3 is :
A
B F 3 < P F 3 < C l F 3
B
C l F 3 < P F 3 < B F 3
C
P F 3 < B F 3 < C l F 3
D
B F 3 = P F 3 < C l F 3
Answer
C l F 3 < P F 3 < B F 3
Explanation
Solution
- BF3: Trigonal planar geometry, bond angle = 120°.
- PF3: Trigonal pyramidal geometry, bond angle < 109.5° (approx. 97.7°).
- ClF3: T-shaped molecular geometry, bond angle < 90° (approx. 87.5°).
The increasing order of bond angles is ClF3 < PF3 < BF3.
