JEE Main 2012 Chemistry question

Chemistry The d and f-Block Elements JEE Main 2012

Magnetic moment of ion (Z = 64) is

(1)3.62 BM
(2)9.72BM
(3)7.9 BMCorrect
(4)10.60BM

Answer: (3)

Solution

is with 7 unpaired electrons: spin-only BM, option (3).

Question ID VK-103497