How many molecules or ions have minimum tow lone pairs on the centre atom ?
`{:(H_(2)O,S_(4),I_(3)^(-),XeF_(3)^(-)),(XeF_(4),XeO_(2)F_(2),CIF_(3),NO_(3)^(-)):}`

How many molecules have two lone pairs on the central atom ? H_(2)O, SF_(4),I_(3)^(-),XeF_(5)^(-),XeOF_(4),PCl_(3),NCl_(3),ClF_(3),XeF_(2),NO_(2)^(-),CO_(3)^(2-)

How many molecules or ions are linear in shape ? {:(BeCl_(2),XeF_(2),CIF_(2)^(-),I_(3)^(-)),(I_(3)^(+),BF_(2),SnCl_(2),):}

How many pairs out of following have equal number of lone pairs on central atom? XeF_(5)^(+," "SO_(2)Cl_(2)," "NH_(2)^(-)," "XeF_(4)

How many compound have lone pair at central atom zero. XeO_(3),XeO_(2)F_(2),XeO_(4),XeO_(3)F_(2),Ba_(2)XeF_(2)

Find the number of molecule having two lone e^(-) pairs, on central atom. I_(3)^(+), XeF_(2), XeF_(4), H_(2)O, NH_(2)^(-), H_(2)S, SO_(4)^(2-), NF_(3), NO_(2)^(-), XeOF_(2)

Find the number of molecule having two lone e^(-) pairs, on central atom. I_(3)^(+), XeF_(2), XeF_(4), H_(2)O, NH_(2)^(-), H_(2)S, SO_(4)^(2-), NF_(3), NO_(2)^(-), XeOF_(2)

Among the following molecules how many are having sp^(3) d hybridization of this central atom ? XeOf_(2), SF_(6), SF_(4), I_(3)^(-) , BrF_(3) , XeF_(2) , POCl_(3) , ClO_(4)^(-), XeF_(4) , PCl_(3) F_(2)

Find the number of molecules having two Ione pair of electrons on central atom. I_(3)^(+), XeF_(2),XeF_(4),H_(2)O,NH_(2)^(-),H_(2)S,H_(2)SO_(4),NF_(3)