The covalency of central atom is maximum in
`HCN`
`NH_(4)^(+)`
`PCl_(5)`
`H_(2)O`

The oxidation of central atom in the complex [ Co(NH_(3))_(4) CINO_(2)] is

The angle between two covalent bonds is maximum for (CH_(4), H_(2)O, CO_(2)) "______" .

The number of lone pairs of electrons on central atom of H_(2)O,SnCl_(2),PCl_(3)and XeF_(2) respectively are:

total number of molecule which hydrolysed at room temperature and hybridization of central atom is sp^(3)d in transition state: C Cl_(4),SiCl_(4),NCl_(3),PCl_(3),AsCl_(3),SF_(6),P_(4)O_(6),P_(4)O_(10),SeF_(6)

Which of the following molecules have both covalent and coordinate bonds ? a) O_(3) b) N_(2)O c) NH_(4)^(+) d) H_(2)O

The molecular formula of Mohr's salt is (NH_(4))_(2)SO_(4)FeSO_(4).6H_(2)O Find the number of atoms of each element.

The correct order of hybridisation of the central atom in the following species NH_3 ,[PtCl_4 ]^(2-) , PCl_5 and BCl_3 is :

Draw electron dot structures of (i) NH_(3) (ii) PCl_(5) (iii) C_(2)H_(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)

Arrange the following in order of decreasing bond angles (i) CH_(4), NH_(3), H_(2)O, BF_(3), C_(2)H_(2)" "(ii) NH_(3), NH_(2)^(-), NH_(4)^(+)