Compare a sodium ion and neutral sodium atom in size. what causes the size difference

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Which metal exist in liquid state and can be cut with knife ?