Question

21 multiple choice 1 point select the most electronegative atom. ca i hg mg

Explanation:

Electronegativity increases across a period and decreases down a group in the periodic table. Among Ca (calcium), I (iodine), Hg (mercury), and Mg (magnesium), iodine is the most non - metallic and has the highest electronegativity. Calcium, mercury, and magnesium are metals and have lower electronegativities compared to iodine.

Answer:

I. Iodine