Resonance in carbonate ion CO 3 2 - is Which of the following is true?

CO 3 2 - has a single structure i.e., resonance hybrid of the above three structures.

It is possible to identify each structure individually by some physical or chemical method.

All these structures are in dynamic equilibrium with each other.

Each structure exists for equal amount of time.

What exactly is described by the canonical structure or resonance structures of the hybrid

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Resonance in carbonate ion $({CO}_{3}^{2 -})$ is

Question Image

Which of the following is true?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Which of the following compounds does not exhibit resonance ?

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Which statement is true?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

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

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

In which of the following pairs, the second compound is more polar than the first ?

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Which of the following compounds can conduct electricity?

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Enthalpy of hydrogenation of one mole of benzene to cyclohexane is
[Resonance energy of benzene

= - 150.4 kJ /

mole .

Enthalpy of hydrogenation of cyclohexene

= - 119.5 kJ /

mole

]

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Which of the following compounds contain(s) no covalent bond(s)?

KCl, {PH}_{3}, O_{2}, B_{2} H_{6}, H_{2} {SO}_{4}

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Question Image

The above compound represents hydrogen azide, the bond orders of bonds $(I)$ and $(II)$ are:

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The compound having longest

C - Cl

bond is:

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The numbers of lone pair and bond pairs in hydrazine are, respectively:

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Find out the correct order of ionic character in the following molecules

$(i) {SO}_{2}$ $(ii) K_{2} O$ $(iii) N_{2}$ $(iv) LiF$

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Among the following molecules, the one with the largest bond angle at the central atom is

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The compound(s) with two lone pairs of electrons on the central atom is (are)

HARD

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The lattice energies of

NaCl, NaF, KCl

and

RbCl

follow the order

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

In ozone molecule, the formal charge on the central oxygen atom is

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

Total number of lone pair of electrons in

{I_{3}}^{-}

ion is:

MEDIUM

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The molecule/molecules that has/have delocalised lone pair(s) of electrons is/are

Question Image

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The most polarisable ion among the following is.

EASY

Physical Sciences>Matter and Its Interactions>Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.>Structure and Properties of Matter - A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.

The number of

π

-bonds and

σ

-bonds present in naphthalene are respectively

What exactly is described by the canonical structure or resonance structures of the hybrid?

Important Questions on Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

Learn and Prepare for any exam you want !