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Q.

If magnetic quantum number of a given electron is represented –3, then what will be its principal quantum number ?

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a

2

b

3

c

4

d

1

answer is C.

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Detailed Solution

  • If the magnetic quantum number of a given atom is represented by −3, then its principal quantum number will be 4.
  • For a given value of l, m= −l,....0...+l
  • When m=−3, l=3
  • For given value of n, l can have values from 0 to n-1.
  • When l=3, n =4 so that n−1= 4−1 =3
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