Sodium mixed with chlorine creates table salt how would you explain this?

Through ionic attraction sodium and chloride ions combine and form sodium chloride.

Explanation:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion. Both atoms are bonded together, electrostatic attraction occur between anion and cations and form salt sodium chloride.

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.  

Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

the answer to this question is 3.