Question

55. which of the sollowing element
outermost orbit's last electron
has magnetic quantum number
m=0?
(a) Na (b) O (c) Cl
(d) N​

Answer 1

Answer:

(a)

Explanation:

In Na there is 1 electron in outermost 3s orbit

for s orbital azimuthal quantum no.(l) is zero

therefore magnetic quantum no.(m) is also zero

because azimuthal Q.no.>/=magnetic quantum no.