Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to

Electronegativity generally increases from left to right across a period because atoms attract shared electrons more strongly. Na, Al, P, and Cl are all in Period 3, and Cl is farthest to the right. Therefore, an electron is most strongly attracted to chlorine.

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