97 solved questions on Chemical Bonding and Molecular Structure, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.
The compound which does not exist is
View solution →The number of paramagnetic species among the following is ___________. $$\mathrm{B}_{2}, \mathrm{Li}_{2}, \mathrm{C}_{2}, \mathrm{C}_{2}^{-}, \mathrm{O}_{2}^{2-},…
View solution →The number of species from the following which are paramagnetic and with bond order equal to one is _________. $$\mathrm{H}_2, \mathrm{He}_2^{+}, \mathrm{O}_2^{+},…
View solution →A diatomic molecule has a dipole moment of $1.2 \mathrm{~D}$. If the bond distance is $1 \mathrm{~A}^{\circ}$, then fractional charge on each atom is _________ $\times 10^{-1}$…
View solution →Among the following species $$\mathrm{N}_{2}, \mathrm{~N}_{2}^{+}, \mathrm{N}_{2}^{-}, \mathrm{N}_{2}^{2-}, \mathrm{O}_{2}, \mathrm{O}_{2}^{+}, \mathrm{O}_{2}^{-},…
View solution →Match the type of interaction in column A with the distance dependence of their interaction energy in column B .tg {border-collapse:collapse;border-spacing:0;} .tg…
View solution →Match List-I with List-II : List-I(Species) List-II(Hybrid Orbitals) (a) $S{F_4}$ (i) $s{p^3}{d^2}$ (b) $I{F_5}$ (ii) ${d^2}s{p^3}$ (c) $NO_2^ +$ (iii) $s{p^3}d$ (d) $NH_4^ +$…
View solution →The bond dissociation energy is highest for
View solution →Match List - I with List - II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Match List-I with List-II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Sum of bond order of CO and NO$^+$ is ________.
View solution →In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one ?
View solution →According to molecular orbital theory, the number of unpaired electron(s) in $O_2^{2 - }$ is :
View solution →$\mathrm{O}-\mathrm{O}$ bond length in $\mathrm{H}_{2} \mathrm{O}_{2}$ is $\underline{\mathrm{X}}$ than the $\mathrm{O}-\mathrm{O}$ bond length in $\mathrm{F}_{2} \mathrm{O}_{2}$.…
View solution →The number of non-polar molecules from the following is _________. $$\mathrm{HF}, \mathrm{H}_2 \mathrm{O}, \mathrm{SO}_2, \mathrm{H}_2, \mathrm{CO}_2, \mathrm{CH}_4,…
View solution →If the magnetic moment of a dioxygen species is 1.73 B.M, it may be :
View solution →Number of molecules having bond order 2 from the following molecules is _________. $$\mathrm{C}_2, \mathrm{O}_2, \mathrm{Be}_2, \mathrm{Li}_2, \mathrm{Ne}_2, \mathrm{~N}_2,…
View solution →Which of the following is least ionic?
View solution →The number of sp2 hybrid orbitals in a molecule of benzene is :
View solution →Total number of species from the following with central atom utilising $\mathrm{sp}^2$ hybrid orbitals for bonding is ________. $$\mathrm{NH}_3, \mathrm{SO}_2, \mathrm{SiO}_2,…
View solution →The total number of species from the following in which one unpaired electron is present, is _______. $$\mathrm{N}_2, \mathrm{O}_2, \mathrm{C}_2^{-}, \mathrm{O}_2^{-},…
View solution →Arrange the bonds in order of increasing ionic character in the molecules. $\mathrm{LiF}$, $\mathrm{K}_2 \mathrm{O}, \mathrm{N}_2, \mathrm{SO}_2$ and $\mathrm{ClF}_3$ :
View solution →When $\psi_{\mathrm{A}}$ and $\psi_{\mathrm{B}}$ are the wave functions of atomic orbitals, then $\sigma^*$ is represented by :
View solution →Number of paramagnetic oxides among the following given oxides is ____________.Li2O, CaO, Na2O2, KO2, MgO and K2O
View solution →The bond order and the magnetic characteristics of CN- are :
View solution →What is the number of unpaired electron(s) in the highest occupied molecular orbital of the following species : $\mathrm{{N_2};N_2^ + ;{O_2};O_2^ + }$ ?
View solution →The number of species from the following in which the central atom uses $\mathrm{sp}^3$ hybrid orbitals in its bonding is __________. $$\mathrm{NH}_3, \mathrm{SO}_2,…
View solution →Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?
View solution →Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →The correct set from the following in which both pairs are in correct order of melting point is :
View solution →Total number of electrons present in $\left(\pi^*\right)$ molecular orbitals of $\mathrm{O}_2, \mathrm{O}_2^{+}$ and $\mathrm{O}_2^{-}$ is ________.
View solution →Arrange the following bonds according to their average bond energies in descending order : C–Cl, C–Br, C–F, C–I
View solution →Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →The number of molecules or ions from the following, which do not have odd number of electrons are _________. (A) NO$_2$ (B) ICl$_4^ -$ (C) BrF$_3$ (D) ClO$_2$ (E) NO$_2^ +$ (F) NO
View solution →The sum of lone pairs present on the central atom of the interhalogen IF$_5$ and IF$_7$ is _________
View solution →The number of bent-shaped molecule/s from the following is __________ N$_3^-$, NO$_2^-$, I$_3^-$, O$_3$, SO$_2$
View solution →Given below are two statements. Statement I: $\mathrm{O}_{2}, \mathrm{Cu}^{2+}$, and $\mathrm{Fe}^{3+}$ are weakly attracted by magnetic field and are magnetized in the same…
View solution →The magnetic behaviour of $\mathrm{Li_2O,Na_2O_2}$ and $\mathrm{KO_2}$, respectively, are :
View solution →Which one of the following molecules has maximum dipole moment?
View solution →Arrange the following in increasing order of their covalent character. A. $\mathrm{CaF}_{2}$ B. $\mathrm{CaCl}_{2}$ C. $\mathrm{CaBr}_{2}$ D. $\mathrm{CaI}_{2}$ Choose the correct…
View solution →Number of electron deficient molecules among the following PH3, B2H6, CCl4, NH3, LiH and BCl3 is
View solution →The total number of molecules with zero dipole moment among $$\mathrm{CH}_4, \mathrm{BF}_3, \mathrm{H}_2 \mathrm{O}, \mathrm{HF}, \mathrm{NH}_3, \mathrm{CO}_2$$ and…
View solution →Number of $\sigma$ and $\pi$ bonds present in ethylene molecule is respectively :
View solution →Match List - I with List - II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Number of molecules/ions from the following in which the central atom is involved in $\mathrm{sp}^3$ hybridization is ________. $\mathrm{NO}_3^{-}, \mathrm{BCl}_3,…
View solution →Aluminium chloride in acidified aqueous solution forms an ion having geometry
View solution →The spin-only magnetic moment value of $B_2^ +$ species is _____________ $\times$ 10$-$2 BM. (Nearest integer) [Given : $\sqrt 3$ = 1.73]
View solution →The total number of anti bonding molecular orbitals, formed from $2 s$ and $2 p$ atomic orbitals in a diatomic molecule is _______.
View solution →The shape / structure of [XeF5]– and XeO3F2, respectively, are
View solution →The total number of molecular orbitals formed from $2 \mathrm{s}$ and $2 \mathrm{p}$ atomic orbitals of a diatomic molecule is __________.
View solution →Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : There is a considerable increase in covalent radius from…
View solution →Order of Covalent bond; $\mathrm{A.~KF KI ; LiF KF}$ $\mathrm{B.~KF KF}$ $\mathrm{C.~SnCl_4 SnCl_2 ; CuCl NaCl}$ $\mathrm{D.~LiF KF ; CuCl $\mathrm{E.~KF NaCl}$ Choose the correct…
View solution →The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom. B. Intermolecular H bonding is…
View solution →The bond order and magnetic behaviour of $O_2^ -$ ion are respectively :
View solution →Chlorine reacts with hot and concentrated NaOH and produces compounds (X) and (Y). Compound (X) gives white precipitate with silver nitrate solution. The average bond order…
View solution →The relative strength of interionic/intermolecular forces in decreasing order is :
View solution →The bond order and magnetic property of acetylide ion are same as that of
View solution →Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Match items of List-I with those of List-II : List - I(Property) List - II(Example) (a) Diamagnetism (i) MnO (b) Ferrimagnetism (ii) ${O_2}$ (c) Paramagnetism (iii) NaCl (d)…
View solution →Among the following, the number of halide(s) which is/are inert to hydrolysis is _________.(A) BF3(B) SiCl4(C) PCl5(D) SF6
View solution →AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on Molecular orbital theory, the bond order of AX is 2.5. The total number of…
View solution →Amongst BeF2, BF3, H2O, NH3, CCl4 and HCl, the number of molecules with non-zero net dipole moment is ____________.
View solution →The hybridization of P exhibited in PF5 is spxdy. The value of y is __________.
View solution →According to MO theory, number of species/ions from the following having identical bond order is ________. $$\mathrm{CN}^{-}, \mathrm{NO}^{+}, \mathrm{O}_{2}, \mathrm{O}_{2}^{+},…
View solution →Amongst the following, the number of oxide(s) which are paramagnetic in nature is $$\mathrm{Na}_{2} \mathrm{O}, \mathrm{KO}_{2}, \mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O},…
View solution →The number of molecule(s) or ion(s) from the following having non-planar structure is ____________. $$\mathrm{NO}_{3}^{-}, \mathrm{H}_{2} \mathrm{O}_{2}, \mathrm{BF}_{3},…
View solution →The number of interhalogens from the following having square pyramidal structure is : $$\mathrm{ClF}_{3}, \mathrm{IF}_{7}, \mathrm{BrF}_{5}, \mathrm{BrF}_{3}, \mathrm{I}_{2}…
View solution →The number of species from the following which have square pyramidal structure is _________ $$\mathrm{PF}_{5}, \mathrm{BrF}_{4}^{-}, \mathrm{IF}_{5}, \mathrm{BrF}_{5},…
View solution →In an ice crystal, each water molecule is hydrogen bonded to ____________ neighbouring molecules.
View solution →The number of species having a square planar shape from the following is __________. $$\mathrm{XeF}_{4}, \mathrm{SF}_{4}, \mathrm{SiF}_{4}, \mathrm{BF}_{4}^{-},…
View solution →The number of following factors which affect the percent covalent character of the ionic bond is _________ (A) Polarising power of cation (B) Extent of distortion of anion (C)…
View solution →The lowest oxidation number of an atom in a compound $\mathrm{A}_2 \mathrm{B}$ is -2 . The number of electrons in its valence shell is _______.
View solution →Number of molecules/species from the following having one unpaired electron is ________. $$\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}$$
View solution →Number of compounds / species from the following with non-zero dipole moment is _________. $$\mathrm{BeCl}_2, \mathrm{BCl}_3, \mathrm{NF}_3, \mathrm{XeF}_4, \mathrm{CCl}_4,…
View solution →Number of compounds from the following with zero dipole moment is _________. $$\mathrm{HF}, \mathrm{H}_2, \mathrm{H}_2 \mathrm{~S}, \mathrm{CO}_2, \mathrm{NH}_3, \mathrm{BF}_3,…
View solution →Number of molecules from the following which are exceptions to octet rule is _________. $$\mathrm{CO}_2, \mathrm{NO}_2, \mathrm{H}_2 \mathrm{SO}_4, \mathrm{BF}_3, \mathrm{CH}_4,…
View solution →The dipole of CCl4, CHCl3 and CH4 are in the order :
View solution →If AB4 molecule is a polar molecule, a possible geometry of AB4 is
View solution →The structure of PCl5 in the solid state is :
View solution →The compound that has the largest H–M–H bond angle (M = N, O, S, C) is :
View solution →Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.Assertion A : Dipole-dipole interactions are the only non-covalent…
View solution →Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron? (A) NO (B) N2 (C) O2 (D) C2 (E) B2 Choose the most…
View solution →The correct order of increasing intermolecular hydrogen bond strength is :
View solution →Decreasing order of the hydrogen bonding in following forms of water is correctly represented by A. Liquid water B. Ice C. Impure water Choose the correct answer from the options…
View solution →Consider the following statements: (A) NF3 molecule has a trigonal planar structure. (B) Bond length of $\mathrm{N}_{2}$ is shorter than $\mathrm{O}_{2}$. (C) Isoelectronic…
View solution →The difference in energy between the actual structure and the lowest energy resonance structure for the given compound is
View solution →The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals A. have the same energy B. have the minimum overlap C.…
View solution →Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): $\mathrm{PH}_3$ has lower boiling point than…
View solution →Given below are two statements : Statement (I) : A $\pi$ bonding MO has lower electron density above and below the inter-nuclear axis. Statement (II) : The $\pi^*$ antibonding MO…
View solution →Arrange the following compounds in increasing order of their dipole moment : $\mathrm{HBr}, \mathrm{H}_2 \mathrm{~S}, \mathrm{NF}_3$ and $\mathrm{CHCl}_3$
View solution →Match the List - I with List - II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Given below are two statements : Statement (I) : Experimentally determined oxygen-oxygen bond lengths in the $\mathrm{O}_3$ are found to be same and the bond length is greater…
View solution →Among $\mathrm{SO}_2, \mathrm{NF}_3, \mathrm{NH}_3, \mathrm{XeF}_2, \mathrm{ClF}_3$ and $\mathrm{SF}_4$, the hybridization of the molecule with nonzero dipole moment and highest…
View solution →Given below are two statements: Statement I : Wet cotton clothes made of cellulose based carbohydrate takes comparatively longer time to get dried than wet nylon polymer based…
View solution →Which of the following molecule(s) show/s paramagnetic behavior? A. $\mathrm{O}_2$ B. $\mathrm{N}_2$ C. $\mathrm{F}_2$ D. $\mathrm{S}_2$ E. $\mathrm{Cl}_2$ Choose the correct…
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