Chemical Bonding and Molecular Structure · Chemistry · TS EAMCET
MCQ (Single Correct Answer)
The atomic numbers of the elements $X, Y, Z$ are $a, a+1, a+2$ respectively. $Z$ is an alkali metal. The nature of bonding in the compound formed by $X$ and $Z$ is
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
| $$ \mathrm{S}_8 $$ |
$$ P_4 $$ |
$$ \mathrm{S}_6 $$ |
$$ \mathrm{O}_3 $$ |
|---|---|---|---|
| A | B | C | D |
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
| List I (Molecule) | List II (Shape) |
| A $\mathrm{SF}_4$ | I. T-shaped |
| B $\mathrm{CIF}_3$ | II. Square planar |
| C $\mathrm{BrF}_5$ | III. See-saw |
| D $\mathrm{XeF}_4$ | IV. Square pyramidal |
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. $\mathrm{NO}^{+}$
$$ \text { Match the following. } $$
| $$ \text { List-I (Molecule) } $$ |
$$ \text { List-II (Shape) } $$ |
||
|---|---|---|---|
| A. | $$ \mathrm{XeF}_4 $$ |
I. | Square pyramidal |
| B. | $$ \mathrm{ClF}_3 $$ |
II. | Pentagonal bipyramidal |
| C. | $$ \mathrm{BrF}_5 $$ |
III. | Square planar |
| D. | $$ \mathrm{IF}_7 $$ |
IV. | Bent T-shape |
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 correct answer is
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
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?
Which of the sulphur compound follows the octet rule?
The hybridisation of Xe in $\mathrm{XeO}_3$ 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
The correct order of $\mathrm{H}-\mathrm{N}-\mathrm{H}$ bond angles of ammonia, ammonium ion and amide are
Find out the correct hybridisation of the central atom in $\mathrm{BCl}_3, \mathrm{PCl}_5, \mathrm{NH}_3$ and $\mathrm{SF}_6$.
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?
$$ \text { Match the following : } $$
| List-I | List-II | ||
| A. | I. | Tetrahedral | |
| B. | II. | Trigonal planar | |
| C. | III. | T-shape | |
| D. | IV. | Trigonal pyramidal | |
$$ \text { The correct match is } $$
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?