In case of octahedral compex, if the e_(g) orbitals (d_(x^(2) - y^(2)) " and " d_(z^(2))) are asymmetricaaly filled, their degeneracy is destroyed and the ligands approaching along +Z and -Z directions experiences different amount of repulsions than the ligands approaching along the +X, -X, +Y " and " -Y directions. As a result, the symmetrical nature of such complexes is lost and either elongation or compression along Z-axis taken place. Answer the following three questions based on the above situation. In which of the following case, no such elongation or compressions are expected ?

In case of octahedral compex, if the e_(g) orbitals (d_(x^(2) - y^(2))

1.	In case of octahedral compex, if the e_(g) orbitals (d_(x^(2) - y^(2)) " and " d_(z^(2))) are asymmetricaaly filled, their degeneracy is destroyed and the ligands approaching along +Z and -Z directions experiences different amount of repulsions than the ligands approaching along the +X, -X, +Y " and " -Y directions. As a result, the symmetrical nature of such complexes is lost and either elongation or compression along Z-axis taken place. Answer the following three questions based on the above situation. In which of the following case, no such elongation or compressions are expected ?
Answer» `d^(4)` - weak LIGANDS `d^(5)`- weak ligands `d^(7)`- STRONG ligands `d^(9)`- strong or weak ligands Answer :B