Read below given tabular form and answer the questions.
Element Electronic configuration Element Electronic configuration
$H e$ $1 s^{2}$ $K r$ $4 s^{2} 4 p^{6}$
$N e$ $2 s^{2} 2 p^{6}$ $X e$ $5 s^{2} 5 p^{6}$
$A r$ $3 s^{2} 3 p^{6}$ $R n$ $6 s^{2} 6 p^{6}$

Which element has electronic configuration as $n s^{2}$ formula?

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Solution

The configuration of elements is:
$H e = 1 s^{2}$ $K r = 4 s^{2} 4 p^{6}$
$N e = 2 s^{2} 2 p^{6}$ $X e = 5 s^{2} 5 p^{6}$
$A r = 3 s^{2} 3 p^{6}$ $R n = 6 s^{2} 6 p^{6}$
Therefore, , He(Helium) has electronic configuration as $n s^{2}$ formula while the others have electronic configuration as $n s^{2} n p^{6}$ formula

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Similar questions

Q. Read below given tabular form and answer the questions.

Element	Electronic configuration	Element	Electronic configuration
$H e$	$1 s^{2}$	$K r$	$4 s^{2} 4 p^{6}$
$N e$	$2 s^{2} 2 p^{6}$	$X e$	$5 s^{2} 5 p^{6}$
$A r$	$3 s^{2} 3 p^{6}$	$R n$	$6 s^{2} 6 p^{6}$

Why the above elements are inactive in chemical reactions?

Q. Read below given tabular form and answer the questions.

Element	Electronic configuration	Element	Electronic configuration
He	$1 s^{2}$	Kr	$4 s^{2} 4 p^{6}$
Ne	$2 s^{2} 2 p^{6}$	Xe	$5 s^{2} 5 p^{6}$
Ar	$3 s^{2} 3 p^{6}$	Rn	$6 s^{2} 6 p^{6}$

Write name of

5^{t h}

period element?

Q. Read below given tabular form and answer the questions.

Element	Electronic configuration	Element	Electronic configuration
He	$1 s^{2}$	Kr	$4 s^{2} 4 p^{6}$
Ne	$2 s^{2} 2 p^{6}$	Xe	$5 s^{2} 5 p^{6}$
Ar	$3 s^{2} 3 p^{6}$	Rn	$6 s^{2} 6 p^{6}$

Write the names of 'noble gas' elements.

The electronic configurations of three elements, $A, B$ and $C$ are given below.

$A : 1 s^{2} 2 s^{2} 2 p^{6}$

$B : 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{3}$

$C : 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5}$

Stable form of $A$ may be represented by the formula:

Q. The electronic configuration of four elements is given below. Which has the tendency to form covalent as well as ionic bonds?

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Read below given tabular form and answer the questions.ElementElectronic configurationElementElectronic configurationHe1s2Kr4s24p6Ne2s22p6Xe5s25p6Ar3s23p6Rn6s26p6Which element has electronic configuration as ns2 formula?

The configuration of elements is:He=1s2 Kr=4s24p6Ne=2s22p6 Xe=5s25p6Ar=3s23p6 Rn=6s26p6Therefore, , He(Helium) has electronic configuration as ns2 formula while the others have electronic configuration as ns2np6 formula