Compute the radius r of an impurity atom that will just fit into an fcc octahedral site in terms of the atomic radius r of the host atom, and compute the radius r of an impurity atom that will just fit into an bcc tetrahedral site in terms of the atomic radius r.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante

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.