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The quantum numbers of four electrons (e1 to e4) are given below :

 nlmse1300+12e240012e332212e431112

The correct order of decreasing energy of these electrons is:

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a
e4>e3>e2>e1
b
e2>e3>e4>e1
c
e3>e2>e4>e1
d
none of these

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detailed solution

Correct option is C

the energy formula for electron in quantum number  is (n+1) value

e1=3+0=3e2=4+0=4e3=3+2=5e4=3+1=4

If (n+1) value is same, then larger n value has more energy. 

so, 

correct order of decreasing energy of the electrons is e3>e2>e4>e1.

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