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If spin quantum number have the values $+ \frac{1}{2}, 0$ and $- \frac{1}{2}$ but all other quantum numbers have values as they had previously, then, the maximum electrons in $5^{t h}$ orbit should be :

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detailed solution

Correct option is B

The maximum electrons in $5^{t h}$ orbit should be 50.

The maximum electrons in $n^{t h}$ orbit is $2 n^{2}$

For n=5

$= 2 \times 5^{2} = 2 \times 25 = 50$

Hence, option B is correct.

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If spin quantum number have the values +12,0 and −12but all other quantum numbers have values as they had previously, then, the maximum electrons in 5th orbit should be :