Question

Which of the following arrangements does not represent the correct order of the property stated against it?

A

: Paramagnetic behavior

B

: Ionic size

C

: Stability in aqueous solution

D

: Number of oxidation states

Hard
BITSAT

Solution

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Correct option is A)

Greater is the number of unpaired electrons, greater is the paramagnetic behavior.
unpaired electrons

unpaired electrons

;

unpaired electrons

unpaired electrons

Hence the correct order of paramagnetic behavior.


For the same oxidation state, the ionic radii generally decreases as the atomic number increases in a particular transition series, hence the order is

In solution, the stability of the compound depends upon electrode potentials, SEP of the transition metal ions are given as



is highly stable as it does not show O.S

More positive is the SEP, less stable is the ion in the aqueous solution.
The increasing order of stability in aqueous solution is :

has two oxidation states.
has three oxidation states.
has five oxidation states.
has six oxidation states.

The increasing order for the number of oxidation states is .

Hence, option is correct.

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