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COMEDK2019Chemistryd and f Block Elements

In 3rd series as we move from scandium to zinc the paramagnetism

Options

  1. Aincreases
  2. Bdecreases
  3. Cfirst increases to a maximum and then decreases
  4. Dfirst decreases to a minimum and then increases

Correct answer

C. first increases to a maximum and then decreases

Step-by-step solution

In 3 d series as we move from Se to 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. The number of unpaired electron, decreases thus, paramagnetism also decreases.

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