The correct set of quantum numbers for Rb (atomic no. 37 ) is

Correct answer: (A) 5,0,0,-1/2. The electronic configuration for Rb (37) is Rb(37) =1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^2 3 d^10 4 p^6 5 s^1 For 5 s^1, n=5, ℓ=0, m=0, s=1/2

Q8 / 120 · VITEEE 2016 · Chemistry

The correct set of quantum numbers for $\mathrm{Rb}$ (atomic no. 37 ) is

Correct answer
A
$5,0,0,-\frac{1}{2}$
B
$5,1,0, \frac{1}{2}$
C
$6,0,1, \frac{1}{2}$
D
$5,1,1, \frac{1}{2}$

Solution

The electronic configuration for Rb (37) is $\begin{array}{l} \operatorname{Rb}(37) \\ =1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{10} 4 p^{6} 5 s^{1} \\ \text { For } 5 s^{1}, n=5, \ell=0, m=0, s=\frac{1}{2} \end{array}$

Hence, the correct answer is option: 'A'.

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