MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Potassium Permanganate

Assertion : ...

Question

Assertion : ${K M n O}_{4}$ is purple in colour due to charge transfer. Reason: There is no electron present in $d -$ orbitals of manganese in ${M n O}_{4}^{-}$ .

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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

C

Assertion is correct but Reason is incorrect

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

D

Assertion is incorrect but Reason is correct

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

Open in App

Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The deep purple colour of potassium permanganate is due to charge transfer from oxygen to Mn.
One of the oxygen becomes $O^{-}$ and the oxidation state of Mn(VII) changes to Mn(VI). Mn(VI) has one unpaired 3d electron. This results in colour. Thus, both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

CaO

formed by decomposition of

{CaCO}_{3}

{SiO}_{2}

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Q. Assertion: The compressibility factor for

H_{2}

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

H e

can be derived from Van der Waal's equation.

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Potassium Permanganate

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Potassium Permanganate

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon