Structure Of Atom Ques 43
43. Consider the following sets of quantum numbers:
| $n$ | $l$ | $m$ | $ \quad $ $s$ | |
|---|---|---|---|---|
| (i) | $3$ | $0$ | $0$ | $+1 / 2$ |
| (ii) | $2$ | $2$ | $1$ | $+1 / 2$ |
| (iii) | $4$ | $3$ | $-2$ | $-1 / 2$ |
| (iv) | $1$ | $0$ | $-1$ | $-1 / 2$ |
| (v) | $3$ | $2$ | $3$ | $+1 / 2$ |
Which of the following sets of quantum number is not possible?
[2007]
(a) (i), (ii), (iii) and (iv)
(b) (ii), (iv) and (v)
(c) (i) and (iii)
(d) (ii), (iii) and (iv)
Show Answer
Answer:
Correct Answer: 43.(b)
Solution:
- (b) (ii) is not possible for any value of $n$ because $l$ varies from $0$ to $(n-1)$ thus for $n=2, l$ can be only $0$ and $1$ .
(iv) is not possible because for $l=0, m=0$.
(v) is not possible because for $l=2, m$ varies from $-2$ to $+2$ .
BETA
