Question

1)Typically, atom gain or lose electrons to achieve (1 point)
A)an exchange of energy
B)ionization
C)a stable electron configuration
D)Vaporization
2)The formation of an ionic bond involves(1point)
A)transfer of electrons.
B)transfer of neutrons.
C)transfer of protons.
D)sharing of electrons.

Answer 1

I think It's C and D.
A bond is formed due to bonding, which is another word for sharing. And you can only share electrons between atoms.
Also, the universe is a very lazy place, so objects tend to go to their comfort zone, in this case, it's when an atom is most stable, which is when it has a stable electron configuration.

Answer 2

2 is A

Ionic bonds are a transferring, or "stealing" of electrons (not quite stealing, but close). Ie, in the ionic bond between Cesium and Fluorine (resulting in CsF), Fluorine snags Cesium's lone valence electron to complete it's own nearly filled outer shell. Greedy Fluorine.

Covalent bonds are sharing (valence electrons are the outermost electrons in a shell, and "co" is joining). F2, diatomic Fluorine for example, is a covalent bond; that same nearly completed n = 2 shell means that each fluorine has 1 unpaired electron. In the covalent bond between them, Fluorine atoms share their unpaired electrons each other, making a stable molecule. Kind and well mannered Fluorine.

And that's why you don't invite halogens to parties.