Chemical bonding & molecular structure practice · Medium

The bond angle between two hybrid orbitalsis 105°. The percentage of s-character of hybrid orbital is between

Arrange the following compounds in decreasing order of their dipole moment.

I. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NO}_2$

II. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}_2$

III. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{F}$

IV. $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{C} \equiv \mathrm{N}$

The dipole moment of $\mathrm{CHC}{\mathrm{l}_3}$ is $1.05$ debye while that of $\mathrm{CC}{\mathrm{l}_4}$ is zero, because $\mathrm{CC}{\mathrm{l}_4}$ is:

How many among the given species have the highest bond order? ${CN}^{-}, {CO}, {NO}^{+}, {O}_2^{+},{O}_2, {~N}_2$

Which of the following does not have a coordinate bond

According to molecular orbital theory

1) ${C_2}^{2 - }$ is expected to be dia magnetic

2) ${O_2}^{2 + }$ is expected to have a longer bond length than ${O_2}$

3) ${N_2}^ +$ and ${N_2}^ -$ have the same bond orders

4) $H{e_2}^ +$ has the same energy as two isolated $He$ atom

$\mathrm{NH}_3$ and $\mathrm{NF}_3$, both the molecules have pyramidal shape with a lone pair of electrons on nitrogen atom. Why does the dipole moment of $\mathrm{NH}_3$ is greater than that of $\mathrm{NF}_3$?

Which of the following set contains same bond angle around central atom?

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

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.

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?

Species having two unpaired electrons is

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:

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?

About the species ${O}_2^{+}, {O}_2^{2-}, {O}_2, {O}_2^{-}$which one of the following statements is correct?