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  4. How many elements would be in the II text nd period of the Periodic Table if the spin quantum numbers could have the value +(1/2), 0,-(1/2) ?

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Q. How many elements would be in the II $^{\text {nd }}$ period of the Periodic Table if the spin quantum numbers could have the value $+\frac{1}{2}, 0,-\frac{1}{2} ?$

Structure of Atom

Solution:

For II $^{nd}$ period

$n=2$ hence,

image

Hence, total number of elements (total value of spin quantum number) = 12