The electronic configuration of chloride ion is __________.
A
2, 8, 7
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B
2, 8, 6
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C
2, 8, 8
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D
2, 8
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Solution
The correct option is B 2, 8, 8 Element chlorine has atomic number 17 and its electronic configuration is 2, 8, 7. On gaining one electron it forms chloride ion whose electronic configuration is 2, 8, 8.