Give the full systematic name of Na₂SO₄.

(a)  

Give the full systematic name of Fe(NO₃)₂.

(a)  

Give the full systematic name of Fe(NO₃)₃.

(a)  

Give the full systematic name of FeSO₄.

(a)  

Give the full systematic name of Cu₂O.

(a)  

Give the full systematic name of H₂SO₃.

(a)  

Give the full systematic name of Mn₂O₇.

(a)