which has the strongest attraction for electrons?\nh\nc\nbr\ncl

Explanation:

Step1: Recall electronegativity concept

Electronegativity measures attraction for electrons.

Step2: Know periodic - trend of electronegativity

Electronegativity increases across a period and decreases down a group in the periodic table.

Step3: Compare given elements

H has low electronegativity. C has moderate electronegativity. Br and Cl are halogens, and Cl is above Br in the group, so Cl has higher electronegativity than Br.

Answer:

Cl