Chemical Bonding and Molecular Structure

Identify the correct statement about ClF3 from the following options :

1. It has T-shaped geometry with three lone pairs on Cl atom.
2. It has T-shaped geometry with two lone pairs on Cl atom.
3. It has a trigonal pyramidal geometry with two lone pairs on Cl atom.
4. It has a planar trigonal geometry with two lone pairs on Cl atom.

The correct formal charges on oxygen atoms numbered 2, 1 and 3 respectively are : [figure]

1. 0, 0, 0
2. −1, 0, +1
3. +1, 0, −1
4. 0, +1, −1

The highest occupied molecular orbital for Ne2 is

1. *2p
2. 2p
3. 2p
4. *2p

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below:

1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false

Identify the correct orders against the property mentioned Choose the correct answer from the options given below:

1. A, C only
2. B, C only
3. A, D only
4. B, D only

Intramolecular hydrogen bonding is present in

1. [figure]
2. [figure]
3. [figure]
4. HF

Identify the correct answer.

1. Three resonance structures can be drawn for ozone
2. BF3 has non-zero dipole moment
3. Dipole moment of NF3 is greater than that of NH3
4. Three canonical forms can be drawn for CO32- ion

Which of the following molecules has "NON ZERO" dipole moment value?

1. CCl4
2. HI
3. CO2
4. BF3

Identify the incorrect statement about PCl5.

1. PCl5 possesses two different Cl-P-Cl bond angles
2. All five P-Cl bonds are identical in length
3. PCl5 exhibits sp3d hybridisation
4. PCl5 consists of five P-Cl (sigma) bonds

Amongst the following, the total number of species NOT having eight electrons around central atom in its outermost shell, is NH3, AlCl3, BeCl2, CCl4, PCl5

1. 2
2. 4
3. 1
4. 3

The correct order of energies of molecular orbitals of N2 molecule, is

1. 1s < 1s < 2s < 2s < 2pz < ( 2px = 2py) < ( 2px = 2py) < 2pz
2. 1s < 1s < 2s < 2s < 2pz < 2pz < ( 2px = 2py) < ( 2px = 2py)
3. 1s < 1s < 2s < 2s < ( 2px = 2py) < ( 2px = 2py) < 2pz < 2pz
4. 1s < 1s < 2s < 2s < ( 2px = 2py) < 2pz < ( 2px = 2py) < 2pz

Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?

1. ClF3
2. IF5
3. SF4
4. XeF2

Which amongst the following is incorrect statement?

1. The bond orders of O2+, O2, O2- and O22- are 2.5, 2, 1.5 and 1, respectively
2. C2 molecule has four electrons in its two degenerate molecular orbitals
3. H2+ ion has one electron
4. O2+ ion is diamagnetic

The correct order of bond angles in the following compounds/species is :

1. CO2 < NH3 < H2O < +NH4
2. H2O < NH3 < +NH4 < CO2
3. H2O < +NH4 < NH3 < CO2
4. H2O < +NH4 = NH3 < CO2

BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :

1. sp2 and 8
2. sp3 and 4
3. sp3 and 6
4. sp2 and 6

Which of the following molecules is non-polar in nature?

1. NO2
2. POCl3
3. CH2O
4. SbCl5

Which of the following set of molecules will have zero dipole moment?

1. Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene
2. Nitrogen trifluoride, beryllium difluoride, water, 1, 3-dichlorobenzene
3. Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4-dichlorobenzene
4. Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene

Identify a molecule which does not exist.

1. Li2
2. C2
3. O2
4. He2

Which of the following diatomic molecular species has only bonds according to Molecular Orbital Theory?

1. C2
2. Be2
3. O2
4. N2

Consider the following species : CN+, CN-, NO and CN. Which one of these will have the highest bond order?

1. NO
2. CN-
3. CN+
4. CN

In the structure of ClF3, the number of lone pairs of electrons on central atom ‘Cl’ is

1. one
2. two
3. four
4. three

Which of the following pairs of compounds is isoelectronic and isostructural ?

1. TeI2, XeF2
2. IBr2-, XeF2
3. IF3, XeF2
4. BeCl2, XeF2

The species, having bond angles of 120 is

1. ClF3
2. NCl3
3. BCl3
4. PH3

Which one of the following pairs of species have the same bond order ?

1. O2, NO+
2. CN-, CO
3. N2, O2-
4. CO, NO

Consider the molecules CH4, NH3 and H2O. Which of the given statements is false?

1. The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3.
2. The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3.
3. The H-C-H bond angle in CH4, the H-N-H bond angle in NH3, and the H-O-H bond angle in H2O are all greater than 90 .
4. The H-O-H bond angle in H2O is larger than the H-C-H bond angle in CH4.

Predict the correct order among the following :

1. bond pair - bond pair > lone pair - bond pair > lone pair - lone pair
2. lone pair - bond pair > bond pair - bond pair > lone pair - lone pair
3. lone pair - lone pair > lone pair - bond pair > bond pair - bond pair
4. lone pair - lone pair > bond pair - bond pair > lone pair - bond pair

Which one of the following compounds shows the presence of intramolecular hydrogen bond?

1. H2O2
2. HCN
3. Cellulose
4. Concentrated acetic acid

The hybridizations of atomic orbitals of nitrogen in NO2+, NO3- and NH4+ respectively are

1. sp, sp3 and sp2
2. sp2, sp3 and sp
3. sp, sp2 and sp3
4. sp2, sp and sp3

The correct geometry and hybridization for XeF4 are

1. octahedral, sp3d2
2. trigonal bipyramidal, sp3d
3. planar triangle, sp3d3
4. square planar, sp3d2

Among the following, which one is a wrong statement ?

1. PH5 and BiCl5 do not exist.
2. p -d bonds are present in SO2.
3. SeF4 and CH4 have same shape.
4. I3+ has bent geometry.