Total number of compound (s) or ions given below having - OUS suffix in their names are - `H_(2)SO_(4),H_(2)SO_(3),HClO,HClO_(2),HClO_(3),Sn^(4+),Sn^(2+),Fe^(+2)`

underline(C)lO_(2)+H_(2)O to HClO_(2)+HClO_(3)

Among the following, find the number of acid(s) which are having hypo prefix in it's name from the following. H_(3)PO_(4),H_(3)BO_(3),H_(3)PO_(3),H_(3)PO_(2),HClO_(3),HClO,(HNO)_(2),H_(4)P_(2)O_(6)

underline(C)lO_(3)+H_(2)O to HClO_(3)+HClO_(4)

Total number of per or peroxy acids containing X-O-O-X linkage (where X is central atom) HClO_(4),H_(2)N_(2)O_(2),H_(2)S_(2)O_(8),H_(2)SO_(5),H_(4)P_(2)O_(7)

H_(4)underline(S_(2))O_(6)+H_(2)O to H_(2)SO_(3)+H_(2)SO_(4)

Find the number of acids which have tetrahedral shape w.r.t. central atom. H_(3)PO_(4),H_(2)SO_(4),H_(3)PO_(3),H_(3)PO_(2),H_(3)BO_(3),HClO_(4),HClO_(3),H_(2)CO_(3)