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Non-Metals

From among th...

Question

From among the elements, choose the following:
Cl, Br, F, O, Al, C, Li, Cs and Xe
The element which has the smallest radius.

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Solution

F is the element which has the smallest radius since it belongs to 2nd period and 17th group. On moving from left to right size decreases in a period.

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c. ₇N, ₆C, ₈O, ₅B, ₁₃Al Which is the most electronegative element among these?
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The increasing order of reactivity among group 1 elements is Li < Na < K < Rb <Cs whereas that among group 17 elements is F > CI > Br > I. Explain.

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X e

.
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