Chemical Bonding and Molecular Structure

Maximum number of H-bonds in one molecule of water is

Which of the following is electron-deficient?

Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?

A sp³ – hybrid orbital contains

Planar structure is shown by

The compound containing coordinate bond is

Which one is electron deficient compound?

Which of the following molecules has trigonal planar geometry?

In which of the following molecules / ions BF₃, NO₂⁻, NH₂⁻ and H₂O, the central atom is sp² hybridized?

In which of the following pairs of molecules / ions, the central atoms have sp² hybridization?

In which of the following pairs, the two species are iso-structure?

The correct order of increasing bond length of C–H, C–O, C–C and C=C is

Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear?

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

The species having maximum stability is

The pair of species that has the same bond order in the following is:

What is the nature of the bond between B and O in (C₂H₅)₂ OBH₃?

Structure of ICl₂⁻ is

In TeCl₄, the central atom tellurium involves

Oxygen is more electrnegative than sulphur, yet H₂S is acidic in nature while H₂O is neutral, because

Which combination is best explained by the coordinate covalent bond?

Which one of the following molecules contains no π bond?

Which contains both polar and non-polar covalent bonds?

Four diatomic species are listed below. Identilfy the correct order in which the bond order is increasing in them:

A no. of ionic compounds, e.g., AgCl, CaF₂, BaSO₄ are insoluable in water. This is because

What is the dominant inter molecular force or bond that must be overcome in converting liquid CH₃OH to a gas?

XeF₂ is isostructural with:

I₄O₉ is a/an

The lattice energy order for lithium halide is

When two atoms of chlorine combine to form one molecule of chlorine gas, the energy of molecule

The correct order of acidic strength of oxides of nitrogen, is

The correct sequence of increasing covalent character is represented by

In which of the folowing pair both the species have sp³ hybridization?

Which of the following represents correct decreasing order of polarity?

The correct order in which the O–O bond length increases in the following is

Bond order of 1.5 is shown by:

Which of the following is paramagnetic?

The pair of species with the same bond order is:

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

The shape of IF₇ molecule is

In the cyanide ion, the formal negative charge is on

The solubility of anhydrous AlCl₃ and hydrous AlCl₃ in diethylether are S₁ and S₂ repectively. Then

There is no S – S bond in

In which one of the following molecules the central atom does not have sp³ hybridization?

Carbon atom in C₂(CN)₄ are

The structure of XeOF₄ is

The forces present in the crystals of naphthalene are

In a homonuclear molecule, which of the following sets of orbitals is degenerate?

During change of O₂ to O₂⁻ ion, the electron adds on which one of the following orbitals?

In the formation of N₂⁺from N₂, the electron is lost from

Four diatomic species are listed below in different sequences. Which of these presents the correct order of their increasing bond order?

Among the following, the species having square planar geometry for central atom are
(i) XeOF₄
(ii) SF₄
(iii) [NiCl₄]²⁻
(iv) [PtCl₄]²⁻

Of the following sets which sets contain isoelectronic species?
1. NO₃⁻, CO₃²⁻, BO₃³⁻
2. CN⁻, N₂, C₂²⁻
3. PO₄³⁻, SO₄²⁻, ClO₄⁻
4. CO₃²⁻, NO₃⁻, SO₃²⁻

The molecules that will have dipole moments are
1. 2, 2, 3, 3-tetramethyl butane
2. cis-3-hexene
3. 2, 2-dimethyl propane
4. trans-2-pentene

The outer orbitals of C in ethene molecule can be considered to be hybridized to give three equivalent sp² orbitals. The total number of sigma (σ) and pi (π) bonds in ethene molecule is

The bond order of NO is 2.5 while that in NO⁺ is 3. Which of the following statements is true for these tow species?

The common feature among the species CN⁻, CO and NO⁺ are

In which of the following ionisation processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic?

Which of the following is not correct regarding the structure of POCl₃?

Some of the properties of othe two species, NO₃⁻ and H₃O⁺ are described below. Which one of them is correct?

A metal M forms chlorides in its + 2 and + 4 oxidation states. Which of the following statements about these chlorides is correct?

Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO₂⁻, NO₃⁻, NH₂⁻, NH₄⁺, SCN⁻?

Oxygen is divalent but sulphur exhibits variable valency of 2, 4 and 6 because

In which one of the following species the central atom has the type of hybridization which is the same as that present in the other three?

H₂O is dipolar, whereas BeF₂ is not. It is because