The hexaaquamanganese(II)ion contains five unpaired electrons,while the hexacyano ion contains only one unpaired electron.Explain using crystal field theory.

On the basis of crystal field theory, explain why [Mn(H_2O)_6]^(2+) contains five unpaired electrons while [Mn(CN)_6)^(4-) contains oNiy one unpaired electron.

An element has one electron in the 'M' shell. Indicate the number of unpaired electrons in its unipositive ion.

When Hg_2 Cl_2 , ionizes, the ions produced and the unpaired electrons present on the cation respectively are

Predict the number of unpaired electrons in the squar planar [Pt(CN)_4]^(2-) ion.

How many unpaired electrons are present in the central metal ion of [CoCl_4]^(2-) ?

Presence of unpaired electrons makes a species paramagnetic. Each unpaired electron has a magnetic moment associated with its spin angular momentum and orbital angular momentum. For the compounds of the first series of transition metals, the contribution of the orbital angular momentum is effectively quenched and hence is considerably important. For these, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the spin-only formula, i.e., mu = sqrt(n(n+2)) where n=number of unpaired electrons and mu =magnetic momentin (in Bohr magneton, B.M.). If n=1, then mu = 1.73 B.M . Which one of the following transition metal ions is paramagnetic?

Presence of unpaired electrons makes a species paramagnetic. Each unpaired electron has a magnetic moment associated with its spin angular momentum and orbital angular momentum. For the compounds of the first series of transition metals, the contribution of the orbital angular momentum is effectively quenched and hence is considerably important. For these, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the spin-only formula, i.e., mu = sqrt(n(n+2)) where n=number of unpaired electrons and mu =magnetic momentin (in Bohr magneton, B.M.). If n=1, then mu = 1.73 B.M . The magnetic moment of a transition metal ion is found to be 3.87 B.M. The number of unpaired electrons present in it is: