Identify the correct statements:a) In an atom | vedclass

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(C) For $n=4$,total orbitals = $n^2 = 16$. Each orbital can have one electron with $m_s=+\frac{1}{2}$. Thus,$16$ electrons are possible. (Correct)b) F

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$a, c, d$

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(C) For $n=4$,total orbitals = $n^2 = 16$. Each orbital can have one electron with $m_s=+\frac{1}{2}$. Thus,$16$ electrons are possible. (Correct)b) For $n=5$,subshells are $s, p, d, f, g$ $(l=0, 1, 2, 3, 4)$,so there are $5$ subshells. (Incorrect)c) For $n=2$,$l$ can be $0, 1$. If $l=1$,$m_l$ can be $-1, 0, +1$. Thus,$n=2, l=1, m_l=0, m_s=-\frac{1}{2}$ is valid. (Correct)d) Radial nodes = $n-l-1$. For $3s$,$n=3, l=0$. Nodes = $3-0-1 = 2$. (Correct)Therefore,statements $a, c,$ and $d$ are correct.

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