The atomic masses of He and Be are 4.00 and 9.01 amu, respectively. Which of the following statements are true? Group of answer choices A mole of Be contains the same number of atoms as a mole of He. None fo these are correct A mole of Be contains more atoms than a mole of He. A mole of He is heavier than a mole of Be.

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.