Use the average mass of magnesium (calculated from the masses of magnesium in the table above) to calculate the average number of moles of magnesium used. Show all your work and setup. (the average mass of the magnesium is 0.00706)

the answer would be b i believe

the answer is option a.

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.