🧪 Chemistry · Structure of Atom · NEET & JEE

The electronic configuration of the chloride ion (Cl⁻, Z = 17) is the same as that of:

Answer: argon.

A argon
B neon
C the chlorine atom
D sodium

Correct answer: A. argon

Explanation: Cl⁻ gains one electron to reach 18 electrons, matching the configuration of argon.

Bohr's model: electrons occupy fixed circular shells (K, L, M) around the nucleus, with each shell holding up to 2n² electrons.

Concept context

Explore how electrons are arranged inside an atom. Covers Bohr's model, quantum numbers, Heisenberg's uncertainty principle, shapes of s, p, d orbitals, and electronic configuration rules.

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The electronic configuration of the chloride ion (Cl⁻, Z = 17) is the same as that of:

Concept context

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