Question

question 7
which of the following elements is the most electronegative?
○ astatine
○ potassium
○ chlorine
○ francium

Explanation:

Electronegativity increases across a period and decreases down a group in the periodic table. Chlorine (Cl) is in Group 17 (halogens) and Period 3, while astatine (At) is below Cl in Group 17 (lower electronegativity), potassium (K) is in Group 1 (low electronegativity), and francium (Fr) is in Group 1, Period 7 (very low electronegativity). Chlorine has the highest electronegativity among the options.

Answer:

chlorine