Chemical Bonding And Molecular Structure Question 299
Question: $ H_2O $ is dipolar, whereas $ BeF_2 $ is not. It I because
Options:
A) The electronegativity of F is greater than that of 0
B) $ H_2O $ involves hydrogen bonding whereas $ BeF_2 $ is a discrete molecule
C) $ H_2O $ is linear and $ BeF_2 $ is angular
D) $ H_2O $ is angular and $ BeF_2 $ is linear
Show Answer
Answer:
Correct Answer: D
Solution:
- In a linear symmetrical molecule like $ [ BeF_2 ] $ the bond angle between three atoms is $ 180{}^\circ $ hence the polarity due to one bond is cancelled by the equal polarity due to other bond, while it is not so in the case of angular molecules like $ H_2O $ .
