Verified Answer :

2 NaCl --------> 2 Na  + Cl₂
  
2 mol 23 g Na = 46 g

2
35,5 g Cl = 71 

 46 g Na --------- 71 g Cl₂
 460 g Na -------- ?

mass ( Cl₂) = 460 . 71 / 46

Mass (Cl₂) = 32660 / 46

m= 710 g of Cl₂

hope thips helps