#### The “spin­-only” magnetic moment [ in units of Bohr magneton, ] of in aqueous solution would be (atomic number of Ni = 28) Option 1) 2.84 Option 2) 4.90 Option 3) 0 Option 4) 1.73

As we learnt in

Calculation of spin only magnetic moment -

where n = no. of unpaired electron

- wherein

The magnetic moment of =

Option 1)

2.84

This option is correct

Option 2)

4.90

This option is incorrect

Option 3)

0

This option is incorrect

Option 4)

1.73

This option is incorrect