When the Elements Lithium and Fluorine React, They Become Ions

Multiple Choice

When the elements lithium and fluorine react, they become ions and form the ionic compound LiF: 2Li(s) + F₂(g) → 2LiF(s) Which of the following atoms decreases in radius as reactants turn to products?

A) lithium
B) fluorine
C) Both lithium and fluorine decrease in size
D) Neither lithium nor fluorine decrease in size