The sum of electrons present in all subshells | vedclass

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(A) The maximum number of electrons in a shell with principal quantum number $n$ is given by $2n^2$. For $n=4$,the total number of electrons is $2(4)^

Vedclass · Accepted Answer

$25$

Vedclass · Answer

(A) The maximum number of electrons in a shell with principal quantum number $n$ is given by $2n^2$. For $n=4$,the total number of electrons is $2(4)^2 = 32$. The number of electrons with $m_s = +\frac{1}{2}$ is $32/2 = 16$. For $n=3$,the total number of electrons is $2(3)^2 = 18$. The number of electrons with $m_s = -\frac{1}{2}$ is $18/2 = 9$. The sum of these electrons is $16 + 9 = 25$.

The sum of electrons present in all subshells of an atom with $m_s$ value of $+\frac{1}{2}$ for $n=4$ and $m_s$ value of $-\frac{1}{2}$ for $n=3$ is

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