Question

# Most electronegative element is :a.)Fb.)Csc.)Hed.)I

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Hint : The most electronegative element is a halogen with the smallest size. It is the lightest halogen. It is pale yellow in colour and highly toxic. It belongs to the 2nd period. It is highly reactive in nature.

The electronic configuration for Fluorine is : $1{s^2}2{s^2}2{p^5}$