Question

Which is not a valid quantum number for a ground state electron on an atom of germanium?

a) n=2 l=1 ml=0 ms=+1/2

b) n=4 l=3 ml=-2 ms=-1/2

c) n=4 l=1 ml=-1 ms=+1/2

d) n=3 l=0 ml=0 ms=+1/2

e) n=3 l=2 ml=1 ms=-1/2

Answer 1

Answer:- b) n=4 l=3 ml=-2 ms=-1/2

solution:- before solving this question first you have to know about some rules of quantum numbers.

condition:-

1. n value will always greater than l

2. l value will be always less than n

values for s-0 , p-1, d-2, f-3

3. ml value will be always less than or equal to l

4. ms=-1/2,+1/2

the ground state electronic configuration of germanium is [Ar] 3d¹⁰4s²4p²

option a) n=2 l=1 ml=0 ms=+1/2 it corresponds to 2p which is in ground state electronic configuration of germanium

option b) n=4 l=3 ml=-2 ms=-1/2 it corresponds to 4f which is not in ground state electronic configuration of germanium

option c) n=4 l=1 ml=-1 ms=+1/2 it corresponds to 4p which is in ground state electronic configuration of germanium

option d) n=3 l=0 ml=0 ms=+1/2 it corresponds to 3s which is in ground state electronic configuration of germanium option e) n=3 l=2 ml=1 ms=-1/2 it corresponds to 3d which is in ground state electronic configuration of germanium

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