Which of the following statements relate...

Which of the following statements related to crystal field splitting in octahedral coordination entities is incorrect?

The `d_(x)^(2)-d_(y)^(2) and d_(z)^(2)` orbitals has more energy is compared to `d_(xy),d_(yz) and d_(xy)` orbitals.

Crystal field splitting energy `(Delta_(a))` depends directly on the charge of the metal ion and on the field produced by the ligand.

In the presence of `Br^(-)` as a ligand the distribution of electrons for `d^(4)` configuration will be `t_(2)^(3)g,e_(g)^(1)`,

In the presence of `CN^(-)` as a ligand `Delta_(@) lt P`.

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The correct Answer is:

`CN^(-)` is a strong field ligand and form low spin complexes thus `Delta_(a) gt P`.

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Which of the following statement is correct ? (CFSE = Crystal Field Splitting Energy)

Lower CFSE favours formation of low spin complex

Higher CFSE favours formation of high spin complex

A particular metal ion in a particular oxidation state can form diamagnetic complexes only or paramagnetic complexes only

`t_(2g)` orbitals are three-fold degenerate while `e_(g)` orbitals are two-fold degenerate

Europium shows `+2` oxidation state

The basicity decreases as the ionic radius decreases form Pr to Lu.

All the lanthanons are much more reactive than aluminium

`Ce(+4)` solution are widely used as oxidizing agent in volumetric analysis.

The curve of B against H for a ferromagnetic material is called hysteresis loop

The area of B-H curve is a measure of power dissipated per cycle per unit, area of the specimen

Coactivity is a measure of the magnetic field required to destroy the residual magnetism of ferromagnetic material

The retentively of a speciment is the measure of magnetic field remaining in the speciment when the magnetising field is removed