Respuesta :
they form by when atoms lose or gain electrons in order to have a full outer shell of electrons to make them stable.One atom pulls an electron from another atom
Answer: Option (A) is the correct answer.
Explanation:
Ionic bonds are the bonds that are formed by transfer of electrons from one atom to another.
For example, NaCl is an ionic compound because sodium donates its one valence electron to the electronegative chlorine atom.
Thus, we can conclude that one atom pulls an electron from another atom best describes how an ionic bond forms.