2NaCl ---> 2Na^(+) + 2Cl^(-)
------This is correct, save ionization.
139 g NaCl (1 mole NaCl/58.44 g)(2 mole Na/2 mole NaCl)(22.99 g/1 mole Na)
=
------Looks right to me, except you left out the molar ratio step, though it is superfluous ( one to one ) it should be included to be formal. You have plugged, now chug!!