Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Solve this problem Which of the following molecules/ ions does not contain unpaired electrons?

Which of the following molecules/ ions does not contain unpaired electrons?

  • Option 1)

    O{_{2}}^{2-}

  • Option 2)

    B_{2}

  • Option 3)

    N{_{2}}^{+}

  • Option 4)

    O_{2}

 

Answers (1)

As we learnt in 

Magnetic behaviour of molecule -

If  all the molecular orbitals in a molecule are doubly occupied, the substance is diamagnetic

- wherein

However if one or more molecular orbital are singly occupied it is paramagnetic e.g. O2

 

 

The molecular orbital configuration of O_{2}^{2-} ion is

Here KKepresents non­bonding molecular orbital of 1s orbital.

O{_{2}}^{2-}contains no unpaired electrons.

 

The molecular orbital configuration of B2 molecule is

It contains 2 unpaired electrons.

 

The molecular orbital configuration of N{_{2}}^{+} ion is

It contains one unpaired electron.

The molecular orbital configuration of O_{2} molecule is

It contains 2 unpaired electrons.

 

 

 


Option 1)

O{_{2}}^{2-}

This option is correct

Option 2)

B_{2}

This option is incorrect

Option 3)

N{_{2}}^{+}

This option is incorrect

Option 4)

O_{2}

This option is incorrect

Posted by

Sabhrant Ambastha

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE aspirant in Kota commits suicide; 16th suicide since January
anam-khan

JEE Main 2025 Registration Live: NTA session 1 application last date today; official website, syllabus
anam-khan

JEE Main 2025 session 1 registration ends today at jeemain.nta.nic.in; application correction from November 26

Latest Question