The Valence Shell Electron Pair Repulsion (VSEPR) Theory

IMPORTANT

The Valence Shell Electron Pair Repulsion (VSEPR) Theory: Overview

This topic covers concepts, such as, Valence Shell Electron Pair Repulsion Theory, Descending Order of Repulsive Interaction of Electron Pairs & Geometry of Molecules Containing No Lone Pair of Electrons etc.

Important Questions on The Valence Shell Electron Pair Repulsion (VSEPR) Theory

MEDIUM
IMPORTANT

The pair of species having identical shapes for molecules of both species is –

 

EASY
IMPORTANT

Give reasons for the highest repulsion between lone pairs of electrons as compared to the bond pair-bond pair repulsions in a molecule.

EASY
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The repulsive interaction of electron pairs follows the order

EASY
IMPORTANT

The F-Br-F bond angles in BrF5 and the Cl-P-Cl bond angles in PCl5, respectively, are

HARD
IMPORTANT

Which of the molecules has trigonal bipyramidal geometry with bond angles 120 ° and 90 °?

HARD
IMPORTANT

Due to_____ the deviations occurs from idealized shape of H2O and NH3 molecules. (attractive effect/repulsive effect)

MEDIUM
IMPORTANT

Which statement about noble gases is not correct?

EASY
IMPORTANT

Identify the molecule which contains lone pair of electrons on the sulphur atom

EASY
IMPORTANT

Which set of the following molecules has only one lone pair of electrons on their respective central atoms?

a) SO2

b) XeF4

c) PbCl2

d) SF4

e) ClF3

Identify the correct statements

EASY
IMPORTANT

Among

(i) XeO3, 

(ii) XeOF4 and

(iii) XeF6, those having the same number of lone pairs on the central atom are _________

HARD
IMPORTANT

Which of the following species has a square planar geometry?

EASY
IMPORTANT

The shape of XeF4 molecule is based on the fact that it has

EASY
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According to VSEPR theory, the correct order of repulsion is

HARD
IMPORTANT

Assertion. H-S-H bond angle in H2S is closer to 90° but H-O-H bond angle in H2O is 104.5°.

Reason. lp-lp repulsion is stronger in H2S than in H2O.

MEDIUM
IMPORTANT

Consider the structure of ClF3, the number of significant repulsion lp-lp=x, lp-bp=y, bp-bp=z, then x+y+z=?

MEDIUM
IMPORTANT

The option having the correct order of bond angle is:

MEDIUM
IMPORTANT

For XeOF4, calculate x+y+z if x is the total number of bond pairs around Xe, y is the total number of lone pairs on all atoms and z is the total number of 90° OXeF angles.