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Question: Answered & Verified by Expert
In 3rd series as we move from scandium to zinc the paramagnetism
Chemistryd and f Block ElementsCOMEDKCOMEDK 2019
Options:
  • A increases
  • B decreases
  • C first increases to a maximum and then decreases
  • D first decreases to a minimum and then increases
Solution:
2113 Upvotes Verified Answer
The correct answer is: first increases to a maximum and then decreases
In $3 d$ series as we move from Se to $\mathrm{Zn}$ paramagnetism first increases as number of unpaired electron increases. After the elements get half-filled the number of unpaired electron decreases as pairing take place.
$\therefore$ The number of unpaired electron, decreases thus, paramagnetism also decreases.

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