Calculate the magnetic moment of `Co^(2+)[Z=27]​`

Calculate the magnetic moments of Fe^(2+) and Fe^(3+)

One unpaired electron in an atom distributes a magnetic moment of 1.1 B.M. Calculate the magnetic moment of chromium (Cr=24)

The magnetic moment of B_2^+ is:

Calculate the spin only magentic moment of M^(2+) ion (Z=27) .