The number of subshells associated with n=4 a | vedclass

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(D) For a given principal quantum number $n=4$,the possible values of azimuthal quantum number $\ell$ are $0, 1, 2, 3$.These correspond to the subshel

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$2$

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(D) For a given principal quantum number $n=4$,the possible values of azimuthal quantum number $\ell$ are $0, 1, 2, 3$.These correspond to the subshells $4s, 4p, 4d, 4f$ respectively.The magnetic quantum number $m$ ranges from $-\ell$ to $+\ell$.For $4s$ $(\ell=0)$: $m=0$.For $4p$ $(\ell=1)$: $m=-1, 0, +1$.For $4d$ $(\ell=2)$: $m=-2, -1, 0, +1, +2$.For $4f$ $(\ell=3)$: $m=-3, -2, -1, 0, +1, +2, +3$.The value $m=-2$ is present in the $4d$ and $4f$ subshells.Therefore,the number of subshells associated with $n=4$ and $m=-2$ is $2$.

The number of subshells associated with $n=4$ and $m=-2$ quantum numbers is :

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