The energies of `d_(xy) and d_(z)^(2)` orbits in octahedral and tetrahedral transition metal complexes are such that-

The relationship between tetrahedral and octahedral complexes is

Spin only magnetic moments of a d^(8) ion in octahedral square planar and tetrahedral complexes, respectively are .

Spin only magnetic moments of a d^(8) ion in octahedral square planar and tetrahedral complexes, respectively are .

According to CFT the energy of t_(2g) orbitals in an octahedral complex

Which of the following statements are correct? (i) In octahedral complexes, d_z2, d_(x^2-y^2) orbitals have higher energy than d_(xy) , d_(yz) and d_(zx) orbitals. (ii) In tetrahedral complexes, d_(xy), d_(yz), d_(zx) orbitals have higher energy than d_z2 and d_(x^2-y^2) orbitals. (iii) The colours of complexes are due to electronic transitions from one set of d-orbitals to another set of orbitals. (iv) Delta_(tetrahedral)=9/4, Delta_(octahedral)

In tetrahedral complex five d-orbitals split up into

The splitting diagram for square planar complexes is more complex than for octahedral and tetrahedral complexes and is shown below with the relative energies of each orbital. Which of the following set of de^(-) have same crystal field stabilisation energy value for tetrahedral complex neglecting pairing energy (P) : (P) d^(1), d^(6)" "(Q) d^(2), d^(7) (R ) d^(3), d^(8)" "(S) d^(4), d^(9) (T) d^(5), d^(10)