The sets of molecules in which central atom has no lone pair of electrons are

I. $\mathrm{SnCl}_2, \mathrm{NH}_3, \mathrm{SF}_4$

II. $\mathrm{HgCl}_2, \mathrm{SO}_3, \mathrm{SF}_6$

III. $\mathrm{BeCl}_2 \mathrm{BF}_3, \mathrm{PCl}_5$

IV. $\mathrm{ClF}_3, \mathrm{BrF}_5, \mathrm{XeF}_6$

The number of lone pairs of electrons on the central atom of $\mathrm{XeO}_3, \mathrm{XeOF}_4$ and $\mathrm{XeF}_6$ respectively is

In which of the following options, the molecules are correctly arranged in the increasing order of their bond angles?

In which of the following the compounds are correctly arranged in the decreasing order of boiling points?

Arrange the following molecules in the correct order of their bond angles

If the sum of bond orders of $\mathrm{O}_2^{-}$and $\mathrm{O}_2^{2-}$ is $x$, then bond order of $\mathrm{O}_2^{2+}$ will be

Identify the molecule / ion in which the ratio of $\sigma$ to $\pi$-bonds is $3: 2$

The sum of bond order of $\mathrm{O}_2^{+}, \mathrm{O}_2^{-}, \mathrm{O}_2$ and $\mathrm{O}_2^{2+}$ is equal to

Observe the following statements

Statement-I Hybridisation is not same in both $\mathrm{SF}_6$ and $\mathrm{BrF}_5$.

Statement-II $\mathrm{BrF}_5$ is square pyramidal while $\mathrm{SF}_6$ is octahedral in shape.

The correct answer is

Observe the following list of molecules. Number of polar and non-polar molecules are respectively

$\mathrm{NH}_3, \mathrm{BF}_3, \mathrm{NF}_3, \mathrm{H}_2 \mathrm{~S}_2, \mathrm{CO}_2, \mathrm{CH}_4, \mathrm{CHCl}_3, \mathrm{H}_2 \mathrm{O}$

The molecule ' $X$ ' has see-saw shape with central atom in $s p^3 d$ hybridisation. What is ' $X$ '?

Identify the pair of molecules in which the hybridisation of the central atom is $s p^2$ with bent geometry.

Consider the following statements

I. In the conversion of $\mathrm{O}_2$ to $\mathrm{O}_2^{2+}$ bond order decreases.

II. In the conversion of $\mathrm{O}_2$ to $\mathrm{O}_2^{2+}$ magnetic property is not changed.

III. In the conversion of $\mathrm{O}_2$ to $\mathrm{O}_2^{2+}$ bond length decreases.

IV. $\mathrm{O}_2^{2-}$ and $\mathrm{B}_2$ have same bond order.

Identify the correct statements

Consider the following pairs.

$ \begin{array}{l|l|l} \hline & \text { Order } & \text { Property } \\ \hline \text { (A) } & \mathrm{NO}_2>\mathrm{O}_3>\mathrm{H}_2 \mathrm{O} & \text { Bond angle } \\ \hline \text { (B) } & \mathrm{HF}>\mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3 & \text { Dipole moment } \\ \hline \text { (C) } & \mathrm{I}_2>\mathrm{F}_2>\mathrm{N}_2 & \text { Bond length } \\ \hline \end{array} $

Which of the above pairs are correctly matched?

In which of the following, molecules are arranged in the increasing order of their bond angles?

Arrange the molecules $\mathrm{B}_2, \mathrm{He}_2, \mathrm{~N}_2$ and $\mathrm{C}_2$ in the increasing order of their bond order values.

According to molecular orbital theory, the molecule which contains only $\pi$-bonds between the atoms is

In which of the following changes there is no change in hybridisation of the central atom?

The ratio of lone pair of electrons to bond pair of electrons in ozone molecule is

Identify the number of molecules in which the central atom has one lone pair of electrons from the following list.

$ \mathrm{PbCl}_2, \mathrm{PH}_3, \mathrm{ClF}_3, \mathrm{SF}_4, \mathrm{BF}_3, \mathrm{SnCl}_2 $

In which of the following molecules, the number of lone pairs of electrons on central atom and the number of $d$-orbitals involved in the hybridisation of central atom, is same?

From the following, identify the ions with same bond order.

I. $\mathrm{CN}^{-} \quad$ II. $\quad \mathrm{N}_2^{+}$

III. $\mathrm{O}_2^{2-}$ IV. $\mathrm{NO}^{+}$

$ \text { Match the following. } $

The correct answer is

Which one of the following compounds is having maximum 'lone pair-lone pair' electron repulsions?

Identify the option in which the molecules are arranged in the correct order of their dipole moments

The bond order of $\mathrm{O}_2^{+}$is $x$. The bond orders of $\mathrm{O}_2^{-}$and $\mathrm{O}_2^{2+}$ are respectively

In which of the following options, molecules are correctly arranged with respect to their bond angles.

The number of lone pair of electrons present in the valence shell of xenon $(\mathrm{Z}=54)$ in $\mathrm{XeOF}_4, \mathrm{XeF}_4, \mathrm{XeF}_2$ and $\mathrm{XeF}_6$ are respectively

The compounds with $s p^2$ hybridised central atom among the following are

(A) $\mathrm{H}_2 \mathrm{CO}_3$

(B) $\mathrm{SiF}_4$

(C) $\mathrm{BF}_3$

(D) $\mathrm{HClO}_2$

The hybridisation and shape of $I_3^{-}$ion, respectively, are

The set of molecules among the following with zero dipole moment is $\mathrm{CCl}_4, \mathrm{BF}_3, \mathrm{CHCl}_3, \mathrm{CS}_2, \mathrm{NH}_3$,

1, 4-dichlorobenzene, $\mathrm{CO}_2$

The correct pair of species which are not isostructural is

Assertion (A) Hydrogen fluoride has higher boiling point than other hydrogen halides.

Reason (R) Hydrogen fluoride exhibits strong hydrogen bonding.

The correct option among the following is

The intramolecular hydrogen bonding is present in

The correct order of the bond angles of the compounds $\mathrm{SiCl}_4, \mathrm{BF}_3, \mathrm{BeCl}_2$ and $\mathrm{SF}_6$ is

Identify all the species that do not exist $\mathrm{H}_2^{+}, \mathrm{He}_2^{2+}, \mathrm{Li}_2^{2-}, \mathrm{Ne}_2, \mathrm{Be}_2^{-}, \mathrm{He}_2$

The correct pair of species with $(A)$ the highest bond order and ( $B$ ) diamagnetic character is

The incomplete Lewis representation of $\mathrm{CO}_3^{2-}$ is given below. The formal charge on atoms marked as $a, b$ and c respectively, are

According to the Lewis formula of $\mathrm{O}_3$, the correct option is

The linear molecule among the following is

The correct order of $\mathrm{C}-\mathrm{O}$ bond length is

How many of the following species have the bond order 2? $\mathrm{C}_2, \mathrm{~B}_2^{2-}, \mathrm{N}_2^{2+}, \mathrm{CN}^{+}, \mathrm{NO}^{-}, \mathrm{O}_2, \mathrm{C}_2^{+}$

The compound with more covalent character in the following is

The correct set of symbols of the molecular orbitals given below is

Find out the correct order of repulsive interaction of electron pairs in the following systems.

(I) Lone pair - lone pair

(II) Lone pair- bond pair

(III) Bond pair-bond pair

The geometry of $\mathrm{XeOF}_4$ is

What is the correct order of bond lengths in the following molecules?

I. $\mathrm{O}_2$

II. $\mathrm{O}_2^{+}$

III. $\mathrm{O}_2^{-}$

IV. $\mathrm{O}_2^{2-}$

Which one of the following compound is hypervalent?

Let's assume the $\mathrm{C}_1 \equiv \mathrm{C}_2$ bond is acetylene is along $Z$-axis. Find out the correct combination of atomic orbitals with non-zero overlapping.

Which of the following molecules is not paramagnetic in nature?

$ \text { Match the following : } $

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">BF</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">BF</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">ClF</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">ClF</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>3</mn>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>4</mn>

<mrow data-mjx-texclass="ORD">

  <mo>+</mo>

</mrow>

<mrow data-mjx-texclass="ORD">

  <mi data-mjx-auto-op="false">NH</mi>

</mrow>

<mn>4</mn>

<mrow data-mjx-texclass="ORD">

  <mo>+</mo>

</mrow>

$ \text { The correct match is } $

Which of the following molecules does not exist according to molecular orbital theory?

What is the nature of the bonding in anhydrous $\mathrm{AlCl}_3$ and hydrated $\mathrm{AlCl}_3$ respectively?