D-And F-Block Elements Ques 322
Question: In first transition series, the melting point of $ Mn $ is low because
[MP PMT/PET 1988]
Options:
A) Due to $ d^{10} $ configuration, metallic bonds are strong
B) Due to $ d^{7} $ configuration, metallic bonds are weak
C) Due to $ d^{5} $ configuration, metallic bonds are weak
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
Due to $ d^{5} $ configuration, metallic bonds are weak.
$ d^{5} $ Orbital is half filled as a result $ 3d $ electrons are more tightly held by the nucleus and this reduces the de-localization of electrons resulting in weaker metallic bonding.
