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Question

Which of the following attains the stable electronic configuration as argon?

A
Chloride
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B
Potassium
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C
Carbon
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D
All of above
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Solution

The correct option is B Chloride
Chlorine with atomic number 17 accepts one electron in its outermost M shell to increase the number of electrons in its valance shell to eight. Thus, it attains the stable electronic configuration of the nearest noble gas argon.

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