Chemical Bonding and Molecular Structure

Identify the correct orders against the property mentioned
A. \({\mathrm{H}}_{2}\mathrm{O}>{\mathrm{NH}}_{3}>{\mathrm{CHCl}}_{3}\) - dipole moment
B. \({\mathrm{XeF}}_{4}>{\mathrm{XeO}}_{3}>{\mathrm{XeF}}_{2}\)- number of lone pairs on central atom
C. \(\mathrm{O}-\mathrm{H}>\mathrm{C}-\mathrm{H}>\mathrm{N}-\mathrm{O}\) - bond length
D. \({\mathrm{N}}_{2}>{\mathrm{O}}_{2}>{\mathrm{H}}_{2}-\) bond enthalpy

Choose the correct answer from the options given below :

Identify the incorrect statement about \(PCl _5\)

[NEET 2024]

Identify the incorrect statement about \(PCl _5\)

Total number of species from the following with central atom utilising \(sp ^2\) hybrid orbitals for bonding is

\(NH _3, SO _2, SiO _2, BeCl _2, C _2 H _2, C _2 H _4, BCl _3, HCHO , C _6 H _6, BF _3, C _2 H _4 Cl _2\)

Total number of species from the following with central atom utilising \(sp ^2\) hybrid orbitals for bonding is

\(NH _3, SO _2, SiO _2, BeCl _2, C _2 H _2, C _2 H _4, BCl _3, HCHO , C _6 H _6, BF _3, C _2 H _4 Cl _2\)

Identify the correct statement.

[NEET 2024]

Which of the following has non-zero dipole moment value?

[Re-NEET 2024]

Which of the following has non-zero dipole moment value?

Identify the correct orders against the property mentioned.
A. \({\mathrm{H}}_{2}\mathrm{O}>{\mathrm{NH}}_{3}>{\mathrm{CHCl}}_{3}\) - dipole moment
B. \({\mathrm{XeF}}_{4}>{\mathrm{XeO}}_{3}>{\mathrm{XeF}}_{2}\)- number of lone pairs on central atom
C. \(\mathrm{O}-\mathrm{H}>\mathrm{C}-\mathrm{H}>\mathrm{N}-\mathrm{O}\) - bond length
D. \({\mathrm{N}}_{2}>{\mathrm{O}}_{2}>{\mathrm{H}}_{2}-\) bond enthalpy

Choose the correct answer from the options given below
[NEET 2025]

Identify the correct statement.

[NEET 2024]

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 has a node between the nuclei.

In the light of the above statements, choose the most appropriate answer from the options given below:

Arrange the following ions in the order of decreasing X – O bond length, where X is the central atom

The number of sigma \( (\sigma) \) and pi \( (\pi) \) bonds in Pent-2 -en-4-yne is

Among the compounds shown below which one revealed a linear structure? [Re-NEET 2020]

In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one?

[JEE Main 2023, 13 Apr (Shift 1)]

Match the column-I with column-II and select the correct option

Identify a molecule which does not exist

[NEET 2020]

Which of the following has minimum melting point?

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

[JEE Main 2020, 9 Jan (Shift 1)]

Match List-I with List-II.

Choose the correct answer from the options given below:

O-O bond length in \(\mathrm{H_2O_2}\) is \(X\) than the O-O bond length in \(\mathrm{F_2O_2}\). The O–H bond length in \(\mathrm{H_2O_2}\) is \(Y\) than that of the O–F bond in \(\mathrm{F_2O_2}\). Choose the correct option for \(X\) and \(Y\) from the given below.

Which of the following set of molecules will have zero dipole moment?

[NEET 2020]

Which of the following pairs will form the most stable ionic bond?

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): NH₃ and NF₃ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of NH₃ is greater than that of NF₃.

Reason (R): In NH₃, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N–H bonds. F is the most electronegative element.

In the light of the above statements, choose the correct answer from the options given below:

What is the number of unpaired electron(s) in the highest occupied molecular orbital of the following species: \(N _2; N _2^{+} ; O _2 ; O _2^{+}\)?

[JEE Main 2023, 24 Jan (Shift 2)]

Amongst the following, the total number of species NOT having eight electrons around central atom in its outermost shell, is
\({\mathrm{NH}}_{3},{\mathrm{AlCl}}_{3},{\mathrm{BeCl}}_{2},{\mathrm{CCl}}_{4},{\mathrm{PCl}}_{5}\)

[NEET 2023]

Which one of the following pairs is an example of polar molecular solids? [JEE Main 2023, 11 Apr (Shift 2)]

The bond order and magnetic behaviour of \(O _2^{-}\)ion are, respectively:

[JEE Main 2021, 26 Aug (Shift 2)]

\( \mathrm{BF}_{3} \) is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are

[NEET 2021]

The hybridisations of atomic orbitals of nitrogen in \( \mathrm{NO}_{2}^{+} \), \( \mathrm{NO}_{3}^{-} \)and \( \mathrm{NH}_{4}^{+} \)respectively are:

The correct order of energies of molecular orbitals of \({\mathrm{N}}_{2}\) molecule, is

[NEET 2023]

Match List I with List II.

Choose the correct answer from the options given below:

[NEET 2024]

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 has a node between the nuclei.
In the light of the above statements, choose the most appropriate answer from the options given below: