NEETChemistryStructure of Atom
Match List I with List II. List I (Ion) List II (Spin-only magnetic moment) A. V ²⁺ I. 1.73 BM B. Mn ²⁺ II. 2.83 BM C. Ni ²⁺ III. 3.87 BM D. Cu ²⁺ IV. 5.92 BM Choose the correct answer from the options given below:
Options
- AA-III, B-IV, C-II, D-I
- BA-I, B-IV, C-II, D-III
- CA-III, B-II, C-IV, D-I
- DA-II, B-IV, C-III, D-I
Correct answer
A. A-III, B-IV, C-II, D-I
Step-by-step solution
The spin-only magnetic moment is calculated using the formula = n(n+2) BM , where n is the number of unpaired electrons. A. V ²⁺ ( Z=23 ): Electronic configuration is [ Ar ] , 3d³ . Number of unpaired electrons, n=3 . = 3(3+2) = 15 3.87 BM . B. Mn ²⁺ ( Z=25 ): Electronic configuration is [ Ar ] , 3d⁵ . Number of unpaired electrons, n=5 . = 5(5+2) = 35 5.92 BM . C. Ni ²⁺ ( Z=28 ): Electronic configuration is [ Ar ] , 3d⁸ . Number of unpaired electrons, n=2 . = 2(2+2) = 8 2.83 BM . D. Cu ²⁺ ( Z=29 ): Electronic confi