Question

The values of the second quantum number 1 for the
fourth main energy level of an atom are
1) 4, 3, 2, 1
2) 4, 3, 2, 1,0
3) 0,1,2,3
4) +3 to -3


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Answer 1

The correct option is C:

Explanation: For the value n(Principal quantum number) =4

The possible values of l(Azimuthal quantum number) can be 0, 1, 2, 3.

Which means there can be 4 possible subshells 4s , 4p, 4d and 4f.

So ,for 4s 2 electrons can be accomodated.

For 4p, 6 electrons can be accomodated.

For 4d, 10 electrons and 4f 14 electrons can be accomodated.

Hence, for n=4, these are the possible values. So, option C is the correct answer.