MCQ
The noble gas that does Not occur in the atmosphere is
- A$He$
- B$Ra$
- ✓$Ne$
- D$Kr$
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$(A)$ $n=3,1=0, m=0$
$(B)$ $n=4,1=0, m=0$
$(C)$ $n =3,1=1, m =0$
$(D)$ $n=3,1=2, m=1$
[Given : mass of electron $=9.1 \times 10^{-31} \mathrm{~kg}$, Plank's constant $(\mathrm{h})=6.626 \times 10^{-34} \mathrm{JS}$ ]
(Value of $\pi=3.14$ )