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.

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

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

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

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

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

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.

In which of the following pairs, both the species are not isostructural ?

1. Diamond, Silicon carbide
2. NH3, PH3
3. XeF4, XeO4
4. SiCl4, PCl4+

Which of the following pairs of ions are isoelectronic and isostructural ?

1. SO32-, NO3-
2. ClO3-, SO32-
3. CO32-, SO32-
4. ClO3-, CO32-

Maximum bond angle at nitrogen is present in which of the following ?

1. NO2+
2. NO3-
3. NO2
4. NO2-

Which one of the following species has plane triangular shape?

1. N3-
2. NO3-
3. NO2-
4. CO2

XeF2 is isostructural with

1. SbCl3
2. BaCl2
3. TeF2
4. ICl2-

Which of the following species contains three bond pairs and one lone pair around the central atom ?

1. H2O
2. BF3
3. NH2-
4. PCl3

The correct order of increasing bond angles in the following species is

1. Cl2O < ClO2 < ClO2-
2. ClO2 < Cl2O < ClO2-
3. Cl2O < ClO2- < ClO2
4. ClO2- < Cl2O < ClO2

The correct order of increasing bond angles in the following triatomic species is

1. NO2+ < NO2 < NO2-
2. NO2+ < NO2- < NO2
3. NO2- < NO2+ < NO2
4. NO2- < NO2 < NO2+

In which of the following pairs, the two species are isostructural?

1. SO32- and NO3-
2. BF3 and NF3
3. BrO3- and XeO3
4. SF4 and XeF4

Which of the following is not a correct statement?

1. Multiple bonds are always shorter than corresponding single bonds.
2. The electron-deficient molecules can act as Lewis acids.
3. The canonical structures have no real existence.
4. Every AB5 molecule does in fact have square pyramid structure.

Which of the following is not isostructural with SiCl4 ?

1. NH4+
2. SCl4
3. SO42-
4. PO43-

Which of the following species has a linear shape?

1. O3
2. NO2-
3. SO2
4. NO2+

In which of the following molecules are all the bonds not equal?

1. NF3
2. ClF3
3. BF3
4. AlF3

Which of the following molecules has trigonal planar geometry?

1. BF3
2. NH3
3. PCl3
4. IF3

Among the following, the pair in which the two species are not isostructural is

1. SiF4 and SF4
2. IO3- and XeO3
3. BH4- and NH4+
4. PF6- and SF6

In a regular octahedral molecule, MX6, the number of X - M - X bonds at 180 is

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

In BrF3 molecule, the lone pairs occupy equatorial positions to minimize

1. lone pair - bond pair repulsion only
2. bond pair - bond pair repulsion only
3. lone pair - lone pair repulsion and lone pair - bond pair repulsion
4. lone pair - lone pair repulsion only.

Which of the following two are isostructural?

1. XeF2, IF2-
2. NH3, BF3
3. CO32-, SO32-
4. PCl5, ICl5

In which of the following bond angle is maximum ?

1. NH3
2. NH4+
3. PCl3
4. SCl2