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Question

Which of the following is the configuration of noble gas?

A
1s22s22p63s2
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B
1s22s22p63s23p63d104s2
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C
1s22s22p63s23p6
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D
1s22s22p5
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Solution

The correct option is C 1s22s22p63s23p6
The valence shell electronic configuration of noble gas is ns2np6.
Only option c) (1s22s22p63s23p6) has this electronic configuration.

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