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JEE Main202117 Mar 2021Evening ShiftChemistryd and f Block ElementsActual

In the ground state of atomic Fe ( Z = 26 ) , the spin-only magnetic moment is × 10 - 1 BM . (Round off to the Nearest Integer). [ Given : 3 = 1 . 73 , 2 = 1 . 41 ]

Correct answer

0

Step-by-step solution

Fe → [ Ar ] 4   s 2 3   d 6 Number of unpaired e - = 4 μ = 4 ( 4 + 2 )   B . M . μ = 24 B . M μ = 4 . 89 B . M μ = 48 . 9 × 10 - 1   B . M Nearest integer value will be 49 .

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