List of top Chemistry Questions on Chemical bonding and molecular structure

The bond order of $\text{Li}_2$ is _______ and it is _______.
Identify the correct orders for the given properties. I. C-H<C-O<N-O<C-C (Bond length) {II. } H_2S<O_3<NO_2<CO_2 (Bond angle) {III. } He_2^+<B_2<C_2<N_2 (Bond order)
Consider the following species: \[ Li_2,\; B_2,\; Be_2,\; C_2,\; O_2,\; O_2^{2-},\; F_2 \] The number of species with bond order value 1 is:
Identify correct orders of covalent character:
Match molecules with correct geometries:
BrF$_5$, XeF$_4$, ClF$_3$, SF$_4$
Which one of the following molecules has maximum number of lone pairs of electrons?
Identify the reaction in which the hybridization of the underlined atom is changed
C=S & C=Te में परस्पर तथा Cl—Cl & F—F में परस्पर आबंध ऊर्जा का सही क्रम क्या होगा?
निम्नलिखित अणुओं में से कौन से अणु का आबंध कोटि (bond order) इसके उच्चतम अधिग्रहित आण्विक कक्षक (highest occupied molecular orbital) से इलेक्ट्रॉन के निकलने पर बढ़ जायेगा?
An ideal gas goes through a reversible isothermal expansion (solid line) followed by a reversible adiabatic expansion (dashed line). Which of the following diagram(s) closely depict(s) the entire process?
Metal-ligand $\pi$-bond formation in Mn$_2$(CO)$_{10}$ and [MnO$_4$]$^-$ requires electron-pair donation between metal and ligand orbitals. Which one of the following represents the direction of electron-pair donation?
What are the numbers of protons (H$^+$) and electrons (e$^-$), respectively, required for the reduction of [Cr$_2$O$_7$]$^{2-}$ to Cr$^{3+}$ under an aqueous acidic condition?
The wave numbers of three spectral lines of hydrogen atom are considered. Identify the set of spectral lines belonging to the {Balmer series. (\(R\) = Rydberg constant)}
Consider the reaction: \[ \text{Ph–CH=CH}_2 \xrightarrow[\text{peroxide}]{\text{HBr}} \text{Product} \] Which of the following statements are correct?
[A.] The reaction proceeds through a more stable radical intermediate.
[B.] The role of peroxide is to generate \(\mathrm{H^\bullet}\) radical.
[C.] During this reaction, benzene is formed as a byproduct.
[D.] \(1\)-Bromo-\(2\)-phenylethane is formed as a minor product.
[E.] The same reaction in absence of peroxide proceeds via a carbocation intermediate. Choose the correct answer.
Identify the correct set of molecules with zero dipole moment:
Which of the following sets are correctly matched? {|c|c|c|} Set & Molecule & Geometry
I & $\text{BrF}_5$ & Square pyramidal
II & $\text{XeF}_6$ & Distorted octahedral
III & $\text{SF}_4$ & Square planar
IV & $\text{PbCl}_2$ & Linear
VSEPRT theory was proposed by
\(\pi\) bond is formed by _____.
Molecular formula of the compound formed by the combination of atoms A and B with 2 and 7 valence electrons in third orbit is ____.
The bond angle in ammonia molecule is ____.
With respect to resonance structures of CO\(_3\)\(^{2-}\) ion, which of the following statements are correct?
(a) All C-O bonds in CO\(_3\)\(^{2-}\) are equivalent
(b) There are three resonance structures possible for CO\(_3\)\(^{2-}\) ion
(c) The position of carbon and oxygen should change in every resonance structure
(d) The formal charge on carbon atom is -2
In which of the following option/options, the order of arrangement does not agree with the variation of property indicated against it?
(a) BF\(_3\)>NF\(_3\)>NH\(_3\) (Dipole moment)
(b) HgCl\(_2\)>NH\(_4\)\(^+\)>SF\(_4\) (Bond angle)
(c) NH\(_3\)<H\(_2\)O<HF (Strength of intermolecular hydrogen bonding)
(d) H - I>H - Br>H – Cl (Bond length)
The correct increasing order of average bond length for C=C, N=O, C-C, N-O is
Which of the following set of molecules are having zero dipole moment?
The pairs among $A = [SO_3^{2-}, CO_3^{2-}]$, $B = [O_2^-, F_2]$, $C = [CN^-, CO]$, $D = [NH_3, H_3O^+]$ and $E = [MnO_4^-, CrO_4^{2-}]$ that do not have similar Lewis dot structure are