Is 1 mole of Na Cl and 1 mole of MgCl2 has same No of ions?

A mole is simply a number of particles (atoms, molecules, cats...anything) and it is equal to 6.023x10^23. So yes, 1 mole of NaCl will have 6.023x10^23 ions, and MgCl2 will have the same number of ions. However, the proportions of each ion will differ in each case.