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Questions  >>  SAT  >>  Chemistry  >>  Atomic Structure
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Q)

If $n=6$, the correct sequence for filling of electrons will be

$\begin{array}{1 1} (a)\;ns \to (n-1)d \to (n-2)f \to np \\ (b)\;ns - (n-2)f \to np \to (n-1)d \\ (c)\;ns - np \to (n-1)d \to (n-2)f \\ (d)\;ns \to (n-2)f \to (n-1)d \to np \end{array} $

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A)
Solution :
$ns \to (n-s)f \to (n-1)d \to np$
$6s \to 4f \to 5d \to 6p$ for $n=6$
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