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Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code:

1. iv v ii i
2. i ii iii iv
3. iii v i ii
4. iv i ii iii

Correct answer: iv v ii i

Solution

The spin magnetic moment of a metal ion depends on the number of unpaired electrons, which can be determined using its electronic configuration. Matching the ions with their respective spin magnetic moments leads to the correct sequence in option A.

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