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.

Question 1:

C. Stable electronic configuration

Explanation:

According to Lewis, the atom will be stable when it has 8 electrons in its outermost energy level.

Therefore, atoms tend to undergo chemical reactions and form bonds by either losing, gaining or sharing electrons in order to fulfill the condition of having 8 electrons in outermost shell and become stable

Question 2:

A. Transfer of electrons

Explanation:

Electrons are the part of the atom that are involved in bonding. Atoms (except for noble gases) tend to lose, gain or share electrons in order to have 8 electrons in outermost shell and achieve stability.

Now,

1- when an atom loses an electron or more to another atom that gains these electrons, transfer of electrons occur and ionic bond takes place

2- when atoms share an electron or more, a covalent bond occurs

Based on the above, transfer of electrons represents the formation of ionic bond

Hope this helps :)

the part of the wave he is travelling on is the crest