Question

Arrange Li, Na , F, O, S in decreasing order of their atomic radii . give reasons for your answer​

Answer 1

Answer:

Na>S>Li>O>F

Explanation:

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Answer 2

Answer:

Na>S>Li>O>F

Explanation:

on moving left to right in a period in periodic table,size (atomic radii) decrease because incoming electron added into the same shell, while on moving up to down in a group size increases because incoming electron added into a new shell.

here Li,O & F are the same period (second period) elements hence fluorine have least atomic radii. Na & S are third period element and S lies right side in the periodic table (below the oxygen) hence it's atomic radii is lesser than Na.

# as the value of principal quantum number (n) increases,atomic radii increases.