Give the correct order of initials T or F for the following statements.Use T if the statement is true and F if it is false.
(I) Number of S-S bonds in H2SnO6 are (n+1)
(II) When F2 reacts with water gives HF ,O2 and O3
(III) KNO3 and BaCl2 compounds are used in fireworks
(IV) Be and Mg hydrides are ionic and polymeric