The number of lone pair(s) of electrons on the central atom is [BrF₄]^-, XeF₆ and [SbCl₆]^3- are, respectively

• 2, 1 and 1

• 2, 1 and 0

• 2, 0 and 1

• 1, 0 and 0

The lewis acidity of BF₃ is less than BCl₃ even though fluorine is more electrongative than chlorine. It is due to

• stronger 1p (B)-3p(Cl) σ- bonding

• stronger 2p(B) - 3p(Cl) π-bonding

• stonger 2p(B) - 2p(F)  σ- bonding

• stronger 2p(B)- 2p(F) π-bonding

What is the structure of XeF₆?

• Tetrahedral

• Distorted octahedral

• Octahedral

• None of these

The geometry around the central atom in ClF${}_4^{+} \mathrm{is}$

• octahedral

• trigonal bipyramidal

• square planar

• square pyramidal

The shape of XeO₂F₂ molecule is

• trigonal bipyramidal

• square planar

• tetrahedral

• see-saw

In OF₂, oxygen has hybridisation of

• sp³

• sp²

• sp

• None of these

Amongst NO${}_3^{-}, {\mathrm{AsO}}_3^{3-}, {\mathrm{CO}}_3^{2-}, {\mathrm{ClO}}_3^{-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$, the non -planar species are

• ${\mathrm{NO}}_3^{-}, {\mathrm{CO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{ClO}}_3^{-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{CO}}_3^{2-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{AsO}}_3^{3-}, {\mathrm{CO}}_3^{2-}\mathrm{and} {\mathrm{SO}}_3^{2-}$

628.

Intramolecular hydrogen bond is present in

• water

• o-nitrophenol

• p-nitrophenol

• methylamine

The molecule C₃O₂ linear structure. This compound has

• 2σ and 3π bonds

• 3σ and 4π bonds

• 4σ and 4π bonds

• 3σ and 2π bonds

The structure of XeF₂ and NH₃ respectively are

• linear, see-saw

• bent, see-saw

• bent, tetrahedral

• linear, pyramidal