Statement 1: Na2O adopts structure similar to that of CaF2 but positions of positive and negative ions are reversed.Statement 2: The structure of Na2O is also called spinal structure.

Na2O structure is also known as antifluorite structure.It follows 4 : 8 type of arrangement.Co.No. of Na+= 4, T.H.V's are occupied by Na+ ions  Co.No. of O-2= 8, ccp, O-2ions follows fcc arrangement.