9. An element in Group VIIA bonds with an element in group IIA. a. Is the resulting compound a covalent or ionic bond?

b. Using an example of specific elements in those groups, write the

chemical formula formed.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

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.