Which of the following statements concerning the quantum numbers are correct ?

Options

A. Angular quantum num ber determ ines the three dim ensional shape of th e orbital.
B. The principal quantum num ber determ ines the orientation and energy of the orbital.
C. M agnetic quantum num ber determ ines the size of th e orbital
D. Spin q u a n tu m n u m b e r of an e lectro n determ ines the orientation of the spin of electron relative to th e chosen axis.

Explanation

(A) Azim uthal quantum num ber ‘Z’ is dimensional shape of the orbital. (B) The principal quantum num ber determ ines the size of the orbit. (C) M agnetic q u an tu m n u m b er d eterm ines the orientation of the electron cloud in a subshell.(D) An electron spins around its ow n axis, m uch in a sim ilar way as earth spins around its own axis whereas revolving around the sun or, an electron has, besides charge and m ass, intrinsic spin angular quantum number.