Given below are two statements:

Statement I: Potassium permangnate on heating at $573 K$ forms potassium manganate.
Statement II: Both potassium permaganate and potassium manganate are tetrahedral and paramagnetic in nature.
In the light of the above statements, choose the most appropriate answer from the options given below:

Both statement I and statement II are true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both statement I and statement II are false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Statement I is true but statement II is false

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Statement I is false but statement II is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Statement I is true but statement II is false
$+ 7 K M n O_{4} 573 K - -- \to + 6 K_{2} M n O_{4} + M n O_{2} + O_{2}$
Diamagnetic Potassium Manganate
one unpaired electron
(Paramagnetic)

The outer electronic configuration of Mn is $3 d^{5} 4 s^{2}$
In $K M n O_{4}$ , Mn is in +7 oxidation state so it will be diamagnetic.
In $K_{2} M n O_{4}$ , Mn is in +6 oxidation state so it will have one unpaired electron so it will become paramagnetic.

Both $K M n O_{4}$ and $K_{2} M n O_{4}$ are tetrahedral in shape.
Hence, (c) is the correct answer.

Suggest Corrections

Similar questions

Q. Given below are two statements:

Statement I: Non-biodegradable wastes are generated by thermal power plants.

Statement II: Biodegradable detergents lead to eutrophication.

In the light of the above statements, choose the most appropriate answer from the options given below.

Q. Given below are two statements:

Statement

I :

α

and

β

forms of sulphur can change reversibly between themselves with slow heating or slow cooling.

Statement

I I :

At room temperature the stable crystalline form of sulphur is monoclinic sulphur.

In the light of the above statements, choose the correct answer from the options given below.

Q. Given below are two statements:
Statement

I :

Both

C a C l_{2} .6 H_{2} O

and

M g C l_{2} .8 H_{2} O

undergo dehydration on heating.
Statement

I I :

B e O

is amphoteric whereas the oxides of other elements in the same group are acidic.
In the light of the above statements, choose the correct answer from the options given below:

Q. Given below are two statements:
Statement I: Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom.
Statement II: Bohr's model of hydrogen atom contradicts Heisenberg's uncertainty principle.
In the light of the above statement, choose the most appropriate answer from the options given below:

Q. Given below are two statements:

Statement I: A mixture of chloroform and aniline can be separated by simple distillation.

Statement II: When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.

In the light of the above statements, choose the most appropriate answer from the options given below:

Join BYJU'S Learning Program