Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Which of the following compounds has colour but no unpaired electron ?Option: 1 <img alt="KMnO_4" src="https://learn.careers360.com/latex-image/?KMnO

Which of the following compounds has colour but no unpaired electron ?

Option: 1

KMnO_4


Option: 2

K_2MnO_4


Option: 3

MnSO_4


Option: 4

MnCl_2


Answers (1)

best_answer
In KMnO_4 ,Mn is +7 oxidation state.

Mn^7^+(Z=25)\rightarrow [Ar]^1^83d^04s^0

It has no unpaired electron but still KMnO_4 is dark pink in colour.

In K_2MnO_4 , Mn is +6 oxidation state. 

Mn^6^+(Z=25)\rightarrow [Ar]^1^83d^14s^0

It has 1 unpaired electron.

InMnSO_4 , Mn is +2 oxidation state

Mn^2^+(Z=25)\rightarrow [Ar]^1^83d^54s^0

It has 5 unpaired electron.

In MnCl_2 , Mn is +2 oxidation state. 

Mn^2^+(Z=25)\rightarrow [Ar]^1^83d^54s^0

Therefore,  option (1) is correct.

Posted by

Pankaj

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

Centre forms committee to tackle coaching dependency, dummy schools, examine JEE, NEET pressure
anam-khan

BSc Nursing NEET cut-offs for AIQ seats, central universities; counselling process, fee details
anam-khan

NEET cut-off trends for MBBS in Tamil Nadu government, private medical colleges; counselling underway

Latest Question