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What is the electronic configuration of chloride?(a) 1s^22s^22p^63s^23p^5(b) 1s^22s^22p^63s^23p^6(c) 1s^22s^22p^5(d) [Ar]4s^24p^3This question was addressed to me during an online exam.The query is from P-Block Elements in division P-Block Elements of Chemistry – Class 12

Answer»

The correct option is (B) 1s^22s^22p^63s^23p^6

To EXPLAIN: Chlorine has the atomic number 17. However, chloride has 18 ELECTRONS. Consequently, it ATTAINS the electronic configuration of argon i.e.1s^22s^22p^63s^23p^6.



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