Chemical Bonding & Molecular Structure

The sum of number of lone pairs of electrons present on the central atoms of XeO3, XeOF4 and XeF6, is ______________

Match List I with List II:

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The correct order of bond orders of \({C_2}^{2 - }\), \({N_2}^{2 - }\) and \({O_2}^{2 - }\) is, respectively

The number of hydrogen bonded water molecule(s) associated with stoichiometry CuSO4.5H2O is ____________.

According to molecular orbital theory, the number of unpaired electron(s) in \(O_2^{2 - }\) is :

The difference between bond orders of CO and NO\(^ \oplus\) is \({x \over 2}\) where x = _____________. (Round off to the Nearest Integer)

The total number of electrons in all bonding molecular orbitals of \(O_2^{2 - }\) is ______________.(Round off to the nearest integer)

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)
Paramagneti...

Match List - I with List - II :Choose the most appropriate answer from the options given below :

The number of species having non-pyramidal shape among the following is ___________.(A) SO3(B) NO\(_3^ -\)(C) PCl3(D) CO\(_3^{2 - }\)

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 interactions, resulting in hydrogen bond formation.Reason R : Fluorine ...

Match List - I with List - II.



List - I (Molecule)

List - II (Bond order)




(a)
\(N{e_2}\)
(i)
1


(b)
\({N_2}\)
(ii)
2


(c)
\({F_2}\)
(iii)
0


(d...

AB3 is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is __________. (Integer answer)

The bond order and magnetic behaviour of \(O_2^ -\) ion are respectively :

Identify the species having one \(\pi\)-bond and maximum number of canonical forms from the following :

In the following the correct bond order sequence is :

Among the following, the number of halide(s) which is/are inert to hydrolysis is _________.(A) BF3(B) SiCl4(C) PCl5(D) SF6

According to molecular orbital theory, the species among the following that does not exist is :

Which among the following species has unequal bond lengths?

Which of the following are isostructural pairs ?
A. \(SO_4^{2 - }\) and \(CrO_4^{2 - }\)
B. SiCl4, and TiCl4
C. NH3 and NO3-
D. BCl3 and BrCl3

The correct set from the following in which both pairs are in correct order of melting point is :

The correct shape and \(I - I - I\) bond angles respectively in \(I_3^ -\) ion are :

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)
\(NO_2^ +\)
...

The number of lone pairs of electrons on the central I atom in I\(_3^ -\) is ____________.

The hybridisations of the atomic orbitals of nitrogen in NO\(_2^ -\), NO\(_2^ +\) and NH\(_4^ +\) respectively are.

The spin-only magnetic moment value of \(B_2^ +\) species is _____________ \(\times\) 10\(-\)2 BM. (Nearest integer) [Given : \(\sqrt 3\) = 1.73]

Number of paramagnetic oxides among the following given oxides is ____________.Li2O, CaO, Na2O2, KO2, MgO and K2O

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 electrons in AX is __________. (Round off to the Nearest Integer...

The number of species below that have two lone pairs of electrons in their central atom is _________. (Round off to the Nearest Integer).SF4, BF\(_4^ -\), ClF3, AsF3, PCl5, BrF5, XeF4, SF6

A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is :

Amongst the following, the linear species is :

Given below are two statements : one is labeled as Assertion A and the other is labelled as Reason R :Assertion A : The H\(-\)O\(-\)H bond angle in water molecule is 104.5\(^\circ\).Reason R : The lone pair - lone pair repulsion of electron...

If the magnetic moment of a dioxygen species
is 1.73 B.M, it may be :

The number of sp2 hybrid orbitals in a molecule
of benzene is :

Arrange the following bonds according to their
average bond energies in descending order :
C–Cl, C–Br, C–F, C–I

The relative strength of interionic/intermolecular forces in decreasing order is :

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 between CI and O
atoms in (Y) is.

The dipole of CCl4, CHCl3 and CH4 are in the order :

The bond order and the magnetic characteristics of CN-
are :

The number of Cl = O bonds in perchloric acid
is, "________".

The structure of PCl5
in the solid state is :

The potential energy curve for the H2
molecule as a function of internuclear distance is :

The compound that has the largest H–M–H bond angle (M = N, O, S, C) is :

The intermolecular potential energy for the
molecules A, B, C and D given below suggests
that :

The reaction in which the hybridisation of the
underlined atom is affected is :

Of the species, NO, NO+, NO2+ and NO-
, the one with minimum bond strength is :

If AB4 molecule is a polar molecule, a possible
geometry of AB4 is

The shape / structure of [XeF5]– and XeO3F2,
respectively, are

The molecular geometry of SF6 is octahedral.
What is the geometry of SF4 (including lone
pair(s) of electrons, if any)?

Match the type of interaction in column A with
the distance dependence of their interaction
energy in column B

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