P-Block Elements Ques 212
Question: $ BCl_3 $ does not exist as dimer but $ BH_3 $ exist as dimer ( $ B_2H_6 $ ) because
Options:
A) Chlorine is more electronegative than hydrogen
B) There is $ p\pi $ - $ p\pi $ back bonding in $ BCl_3 $ but $ BH_3 $ does not contain such multiple bonding
C) Large sized chlorine atoms do not fit in between the small boron atoms whereas small sized hydrogen atoms get fitted in between boron atoms
D) None of the above
Show Answer
Answer:
Correct Answer: C
Solution:
Small size of hydrogen atom
