Which statement is true about ionic compounds? A) They are made up of many large molecules that are bonded together.
B) They are made up of atoms of only one type of element.
C)They are made up of particles that are arranged in a repeating pattern.
D) They are made up of a random ratio of elements that are bonded together.

i belive it is water

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.