Analyse the options given below and choose an element with the largest atomic radii.

Beryllium

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Fluorine

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Lithium

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Neon

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Solution

The correct option is C
Lithium

As we go left to right across a period, the atomic radii tend to decrease because of the increase in effective nuclear charge.

Lithium, fluorine, beryllium and neon are elements present in the second period of a modern periodic table with lithium being the first element of this period. Hence, among the given options, lithium has largest atomic radii.

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