Question

The electrons identified by quantum numbers $n$ and $l$,

(i) $n=4, l=1$

(ii) $n=4, l=0$

(iii) $n=3, l=2$

(iv) $n=3, l=1$

can be placed in order of increasing energy from the lowest to highest as :

(a) (iv) $<$ (ii) $<$ (iii) $<$ (i)

(b) (ii) < (iv) < (i) < (iii)

(c) (i) $<$ (iii) $<$ (ii) $<$ (iv)

(d) (iii) $<$ (i) $<$ (iv) $<$ (ii)

Answer 1

Ans : Here, The correct answer of this question will be option (a)