Number of completely filled shells for element { }_{16} S ^{32} is

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12.Atoms

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The number of completely filled shells for the element ${ }_{16} S ^{32}$ is

A

$1$

B

$2$

C

$3$

D

$4$

(KVPY-2017)

Solution

(b)

Atomic number of ${ }_{16} S ^{32}$ is $16$ . Its electronic configuration using $2 n^2$ rule is

${ }_{16} S =\underbrace{1 s^2, 2 s^2 p^6}_{[ Ne ]}, \underbrace{3 s^2 p^4}_{\text {Unfilled }}$

So, number of fully filled orbits or shells is $2 .$

Standard 12

Physics

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