PART - 1 CH - 1 Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

$(A)$ The principal quantum number $'n'$ is a positive integer with values of $'n'=1,2,3, \ldots$.

$(B)$ The azimuthal quantum number $'l'$ for a given $'n'$ (principal quantum number) can have values as $'l'=0,1,2, \ldots n$

$(C)$ Magnetic orbital quantum number $'m _{l}'$ for a particular $'l'$ (azimuthal quantum number) has $(2 l$ + 1) values.

$(D)$ $\pm 1 / 2$ are the two possible orientations of electron spin.

$(E)$ For $l=5$, there will be a total of $9$ orbital.

Which of the above statements are correct?

$A : 1s^2\, 2s^2\, 2p^6$
$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$
$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$