Which of the following is the most electronegative element?

Correct option is A

The correct answer is (A) Cl.

Explanation:Chlorine is the most electronegative element among the options.

Incorrect Options Explanations:

• (B) S: Sulfur has a lower electronegativity than chlorine.
• (C) Al: Aluminum’s electronegativity is less than chlorine's.
• (D) Mg: Magnesium is the least electronegative in this list.

Information Booster:

• Electronegativity: Chlorine has a value of 3.16.
• Periodic Trends: Electronegativity increases across a period and decreases down a group.
• Most Electronegativity: Fluorine is the most electronegative element at 3.98.