Chemical bonding & molecular structure practice · Mixed difficulty

The compound with longest bond length is

On comparison with ${H}-{C}-{H}$ bond angle of methane, the ${C}-{N}-{C}$ bond angle of trimethylamine is

Among the following, the species with identical bond order are

The state of hybridisation of ${C}-1$ and ${C}-3$ carbon atoms in the following molecule, respectively are
$C{H_3} - \mathop C\limits^{\begin{array}{cccccccccccccccccccc} O \\ {||} \end{array}} - C{H_2} - CN$

Read the given statements.

$A$. The symmetrical electron distribution renders the bond of diatomic molecule non-polar

$B$. The electric dipole moment of both the ${NH}_3$ and ${NF}_3$ is equal.

$C$. The dipole moment of a polyatomic molecule is the resultant of all the electric dipole of the bonds.

Choose the correct option.

According to Pauling, the atomic orbitals combine to form new set of equivalent atomic orbitals known as

Assertion (A) : Dipole moment of o-dichloro benzene is larger than the theoretical value.

Reason (R): Due to dipole-dipole repulsion of two ${Cl}$-atoms in ortho position bond angle is greater than $60^{\circ}$.

The interatomic distances in ${H_2}$ and $C{l_2}$ molecules are 74 and 198 pm respectively. The bond length of HCl is:

The bond angle in ${\mathrm{H}_2}\mathrm{S}$ (for $\mathrm{H} - \mathrm{S} - \mathrm{H}$) is:

Cyclic hydrocarbon ‘A’ has all the carbon and hydrogen atoms in a single plane. All the carbon – carbon bonds have same length, less than $1.54\,\,\mathop \mathrm{A}\limits^\mathrm{o}$, but more than $1.34\,\,\mathop \mathrm{A}\limits^\mathrm{o}$ The $\mathrm{C} - \mathrm{C} - \mathrm{C}$ bond angle will be

The lattice energy order for lithium halide is:

Assertion: In Neon, the atoms are held together
by covalent bond.
Reason: Noble gases like Neon only have Vander
waals force between the atoms

Bond length decreases with:

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

The electrons in an incomplete outershell are known as:

Which is expected to show paramagnetism?

The bond angle in $\mathrm{As}{\mathrm{H}_3}$ is greater than that in

Assertion (A): All $P-Cl$ bond lengths are equal in ${PCl}_3$ but different in ${PCl}_5.$

Reason (R): Hybrid state of central atom is different in Both molecules.

Species having two unpaired electrons is

Atoms or group of atoms which are electrically charged are known as:

Statement I: If hydration energy is greater than lattice energy, the solid dissolves in liquid.

Statement II: The solubility of solid in a liquid depends upon lattice energy and hydration energy.

In which one of the following molecules the central atom said to adopt ${sp}^2$ hybridization?

According to bond order concept the correct order of stability of ${O_2},\,\,\,O_2^ + ,\,\,\,O_2^ -$ is _______

Given below are two statements, one is labelled as
Assertion A and the other is labelled as Reason R.

Assertion A : Isotopes of hydrogen have almost
same chemical properties, but difference in their
rates of reactions.

Reason R: Isotopes of hydrogen have different
enthalpy of bond dissociation.

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

What is the hybridisation of ${Be}$ in ${BeF}_2$ molecule?

In which molecule the central atom does not use $s{p^3}$-hybrid orbitals in its bonding?

The bond length is maximum in:

${Cl}-{O}$ bond length is minimum in :-

Which of the following dissolves in ionic solvents?

Which of the following has lowest bond angle?