Which ion has the same electronic configuration as Cl
–
?
A F– B P+ C Sc3+ D Si4+
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Chlorine gains an electron (remember not from any empty space, either from metal or a semimetal) and chloride ion is formed, with electronic configuration of 2, 8, 8. Hence, the electronic configuration of chloride ions is 2, 8, 8. Therefore, option C is the required answer.
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