The bond angle is maximum in PI₃,which is

• due to small size of P

• due to more bp-bp repulsion in PI₃

• due to less electronegativity of P

• None of the above

The shape of [PtCl₃(C₂H₄)]^- and the hybridisation of Pt respectively are

• tetrahedral, sp³

• trigonal pyramidal, sp³

• square planar, dsp²

• square planar, d²sp³

Among the following compounds both coloured and paramagnetic one is

• K₂Cr₂O₇

• VOSO₄

• (NH₄)₂.[TiCl₂]

• K₃[Cu(CN)₄]

Which of the following has maximum bond energy?

• C=C

• C=O

• O=O

• N=O

355.

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