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Question: Answered & Verified by Expert
In first transition series, the melting point of $M n$ is low because
Chemistryd and f Block ElementsJEE Main
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
Solution:
1932 Upvotes Verified Answer
The correct answer is: Due to $d^5$ configuration, metallic bonds are weak
Due to $d^5$ configuration, metallic bonds are weak. $d^5$ orbital is half filled as a result $3 d$ electrons are more tightly held by the nucleus and this reduces the de-localization of electrons resulting in weaker metallic bonding

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