Complete the table.
Atomic No. Element Electronic configuration Select element of the same group
$11$ Sodium ............... ( $C a / N / K$ ) ..........
$15$ Phosphorus ............... ( $B a / N / R b$ ) ..........
$16$ Sulphur ............... ( $F / C l / O$ ) ..........
$9$ Fluorine ............... ( $C a / C l / K$ ) ..........

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Solution

Sodium: $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$
Potassium has similar configuration hence same group only difference in outer most outer most shell that is 4 in potassium.
Phosphorous- $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}$
Nitrogen has similar configuration.
Sulphur- $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{4}$
Oxygen has similar configuration.
Fluorine- $1 s^{2} 2 s^{2} 2 p^{5}$
Chlorine has similar configuration.

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Similar questions

S^{2 -}, K^{+}, C a^{2 +}, C l^{-}

B e > M g > C a > S r > B a

F > C l > B r > I

B e > B > C > N > O

C l > F > B r > I

K, C a, R b

C s

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Atomic No.	Element	Electronic configuration	Select element of the same group
$11$	Sodium	...............	( $C a / N / K$ ) ..........
$15$	Phosphorus	...............	( $B a / N / R b$ ) ..........
$16$	Sulphur	...............	( $F / C l / O$ ) ..........
$9$	Fluorine	...............	( $C a / C l / K$ ) ..........