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Which of the following represents the electronic configuration of an element with atomic number 17

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a
1s22s22p63s13p6
b
1s22s22p63s23p44s1
c
1s22s22p63s23p5
d
1s22s22p63s13p44s2

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detailed solution

Correct option is C

Atomic no. 17 is of chlorine.

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