Question

8. Choose the correct option for the quantum numbers of the last electron of K+.
(A) 4, 0, 0, +1/2
(B) 3, 1,-1, -1/2
(C) 4, 1, 0,
(C)4, 1, 0, -
(D) 3,0, 1,​

Answer 1

Answer:

E.C of Rubidium is (Z=37) = 1s

2

2s

2

2p

6

3s

2

3p

6

4s

2

3d

10

4p

6

5s

1

The valence electron is in 5s orbital.

Its 4 quantum numbers are- n=5,l=0,m=0,s=+

2

1

Therefore, the correct option is C