# When electrons jump from 3rd orbit to 2nd orbit, how many field lines can be emitted by the atom?

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When electrons jump from 3rd orbit to 2nd orbit, how many field lines can be emitted by the atom?
posted Jul 27, 2017

Formula is: (n2-n1)(n2-n1+1)/2
Where
n2=higher shell from where electron makes transistion
n1=lower energy shell

=> 1*2/2
=> 1