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Question

Which of the following outer electronic configuration represent argon?


A

ns2

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B

ns2np6

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C

ns2np5

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D

ns2np4

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Solution

The correct option is B

ns2np6


Explanation for correct option:

B. ns2np6

Noble gas:

  • Noble gases belong to Group-18.
  • The stability of noble gases is very high.
  • Noble gases exhibit stable electronic configuration due to the completely filled orbitals.
  • They are fairly non-reactive gases.
  • The general electronic configuration of Noble gas is ns2np6.

Argon is a noble gas with an atomic number18 and it has an electronic configuration 1s22s22p63s23p6.

Explanation for incorrect options:

A. ns2represents the outer electronic configuration for Helium.

C. ns2np5 represents the outer electronic configuration for Halogens.

D. ns2np4 represents the outer electronic configuration for Group-16.

Hence, the correct option is B i.e. ns2np6.


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