Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • I need help with - Chemical Bonding and Molecular Structure - JEE Main

In a multi­-electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields?

(i)\; \; n=1,l=0,m=0

(ii)\: \: n=2,l=0,m=0

(iii)\: \: n=2,l=1,m=1

(vi)\: \: n=3,l=2,m=1

(v)\: \: n=3,l=2,m=0

 

  • Option 1)

    (i) and (ii)

  • Option 2)

    (ii) and (iii)

  • Option 3)

    (iii) and (iv)

  • Option 4)

    (iv) and (v)

 

Answers (2)

best_answer

As we learnt in

Principal Quantum Number (n) -

 It is a positive integer with value of n = 1,2,3.......

-

 

 

Azimuthal Quantum Number(l) -

For a given value of n, l can have n values ranging from 0 to n – 1, that is, for a given value of n, the possible value of l are : l = 0, 1, 2, ....( n –1)

-

 

 

Magnetic Quantum Number (m) -

 For any sub-shell (defined by ‘l ’value) 2\: l+1values of m are possible and these values are given by :

m = – l , – ( l –1), – ( l – 2)... 0,1... ( l – 2), ( l –1),l

-

 

 

 

Orbitals having same \left ( n+1 \right ) value in the absence of electric and magnetic field will have same energy.

 

In the given problem the n+l value is same for \left ( IV \right ) and \left ( V \right )

ie. 3 + 2=5


Option 1)

(i) and (ii)

Incorrect Option

Option 2)

(ii) and (iii)

Incorrect Option

Option 3)

(iii) and (iv)

Incorrect Option

Option 4)

(iv) and (v)

Correct Option

Posted by

Aadil

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 Main Maths 2025: Five tips to score high marks in ‘toughest’ subject; most important chapters
anam-khan

JEE Main 2025 exam city intimation slip for session 1 soon at jeemain.nta.nic.in
anam-khan

Focus on modern physics, formulas to solve tricky problems; 5 tips to tackle JEE Main physics 2025

Latest Question