How is it that the atomic mass of an element can be converted to the mass of one mole? because the atomic mass in grams is equal to the mass of one mole, also in grams
because the atomic mass is exactly half the mass of one mole
because the atomic mass in amu is equal to the mass of one mole in grams
because the atomic mass is exactly 1.5 times greater than the mass of one mole

c. electrical charges of ionic bonds.

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.