Find the number of species in which `dpi-ppi` bonds are present?
`ClO_(3)^(-),PO_(4)^(3-),SO_(3),NO_(3)^(-)`

Find the number of species having two ppi-dpi bonds. SO_(2),SO_(3),XeOF_(4),XeO_(2)F_(2),POCl_(3),CO_(3)^(2-),NO_(3)^(-)

Find the total number of acidic radical which prodce with dil HCl SO_(4)^(2-),I^(-),NO_(2)^(-),SO_(3)^(2-),HCO_(3)^(-)

Find the number of ppi-dpi bonds in N_(2)O .

Find the number of species having bond angle less than 109^(@)28' NH_(3),PH_(3),SiH_(4),NH_(4)^(+),PF_(3),NH_(2)^(-),SO_(3),NO_(2)^(+),"CCl"_(4),H_(2)O,H_(2)S,SO_(4)^(2-)

Find the number of ppi-dpi bonds in (NH_(4))_(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)

Calculate ppi-dpi bonds present in SO_(4)^(2-)", "NO_(3)^(-) and trimer of SO_(3) .