An ionic bond forms between sodium and chlorine when the sodium atoms electrons

The correct answer is when sodium atoms donate electrons.

Explanation:

There are 2 types of bonds:

1. Covalent Bond: These bonds are formed when there is sharing of electrons between the atoms that are joining to form a bond.

2. Ionic bond: These bonds are formed when there is complete transfer of electron from one atom to another. In this bond, the atom which donates the electron is known as electropositive atom and forms a cation and the atom which accepts the electrons is known as electronegative atom and forms an anion.

In the question, an ionic bond is formed between sodium and chlorine atom.

Sodium is electropositive atom and has an extra electron to donate it to chlorine atom which is one electron short in obtaining noble gas configuration. Hence, Sodium atoms will donate electrons.