quiz: period table & trends\nwhich element is the most electronegative?\no b\no h\no fr\no f

Brief Explanations:

Electronegativity increases across a period and decreases down a group in the periodic table. Fluorine (F) is in the top - right of the periodic table (excluding noble gases) and has the highest electronegativity value among the elements. Boron (B), hydrogen (H), and francium (Fr) have much lower electronegativities compared to fluorine.

Answer:

D. F