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  • Dipositive and tripositive ions of A and B possess same number of electron pairs, but different number of unpaired electrons. Both are paramagnetic. Identify the atomic numbers of A and B.<div

Dipositive and tripositive ions of A and B possess same number of electron pairs, but different number of unpaired electrons. Both are paramagnetic. Identify the atomic numbers of A and B.

Option: 1

29, 30


Option: 2

22, 24


Option: 3

22, 23


Option: 4

21, 23


Answers (1)

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Explanation Let us assume the atomic number of A and B be 22 and 24 respectively.

\mathrm{A^{+2}(20): 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^0 3 d^2 }  (2 unpaired electron, hence paramagnetic)

\mathrm{B^{+3}(21): 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^0 3 d^3}  (3 unpaired electron, hence paramagnetic).

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Divya Prakash Singh

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