Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • I have a doubt, kindly clarify. - Atomic Structure - JEE Main-2

Consider the ground state of Cr atom \left ( Z=24 \right ).The numbers of electrons with the azimuthal quantum numbers l= 1\: and\: 2 are, respectively

  • Option 1)

    12 \: and \: 4

  • Option 2)

    12 \: and \: 5

  • Option 3)

    16 \: and \: 4

  • Option 4)

    16 \: and \: 5

 

Answers (2)

As we learnt in 

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)

-

_{24}Cr\rightarrow 1s^{2}\: 2s^{2}\: 2p^{6}\: 3s^{2}\: 3p^{6}\: 3d^{5}\: 4s^{1}

we know for p,l=1\: and \: for\: d,l= 2

F\! or\; l=1,total\: number\: of \: electrons \: = 12\: \: \left [ 2p^{6}\ and\ 3p^{6} \right ]

F\! or\; l=2,total\: number\: of \: electrons \: = 5\: \: \left [ 3d^{5} \right ]

 


Option 1)

12 \: and \: 4

Incorrect option

Option 2)

12 \: and \: 5

Correct option

Option 3)

16 \: and \: 4

Incorrect option

Option 4)

16 \: and \: 5

Incorrect option

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 Main 2024 Topper: Farmer’s son Gajare Nilkrishna says ‘keep questioning until you understand’
anam-khan

NIT Puducherry Cut-off 2024: Computer Science and Engineering had highest closing rank last year
anam-khan

What after JEE Main results 2024? All you need to know about JEE Adv, CSAB, JoSAA counselling

Latest Question