Question

10. The magnetic moment of an ion having 4 unpaired electrons is :
(1) 3.9 B.M. (2) 2.8 B.M. (3) 1.7 B.M. (4) 4.9 B.M.​

Answer 1

Answer:

2.8

Explanation:

multipication of 1/2.2

Answer 2

Answer:

$magnetic \: moment(u) \\ = \sqrt{n(n + 2)} \: B.M.$

where n is no. of unpaired electron

now the value of n= 4 put in formula,

$\sqrt{4(4 + 2) }B.M.$

$\sqrt{4(6)} = \sqrt{24}$

$and \: value \: of \: \sqrt{24 } = 4.9 B.M.$

option 4 is right answer

Hope its help you ❤