Question

Find the size of atom cl- , Na+, Cl​

Answer 1

Answer:

Cl- 175pm

Na+ 227pm

Cl 175 pm

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Answer 2

And so to your question, finally!

Na+ is smaller than Na; and Cl is larger than Cl

Atomic Cl should be smaller than atomic Na

given their position on Period 3. And anionic Cl−

should be larger than Na+

with respect to their parent atoms. Are you happy with this?