Is it true that $N a^{+}$ ion radius is always smaller than Na atom.

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Both (A) and (R) are true but (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

(A) is true but (R) is false

answer is A.

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Detailed Solution

The radius of the cation is always smaller than the parent atom due to increased effective nuc;ear charge. $N a^{+}$ ion radius is always smaller than Na atom. $(N a > N a^{+})$ .

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