Chemical bonding & molecular structure practice · Medium

For $\mathrm{CO}$ molecule, correct statement is

In which of the following state of compound the magnitude of ${H}$-bonding will be maximum and in which case it will be minimum ?

Among the following, which is water insoluble?

Assertion(A) All ${F}-{S}-{F}$ angles in ${SF}_4$ are greater than $90^{\circ}$ but less than $180^{\circ}$.

Reason(R) The lone pair-bond repulsion is weaker than bond pairbond repulsion.

Consider the following statements
I. The canonical forms have no real existence.
II. The molecule does not exist for a certain fraction of time in one canonical form and for other fractions of time in other canonical forms.
III. There is no such equilibrium between the canonical forms as we have between tautomeric forms (keto and enol) in tautomerism.
IV. The molecule such as has a single structure which is the resonance hybrid of the canonical forms and which cannot such as be depicted by a single Lewis structure.
Which of the above statements are correct?

Which of the following ion has maximum polarsing power.

Which of the following has the minimum bond length?

Which of the following gives correct arrangement of compounds involved based on their bond strength

The d-orbital which is not involved in hybridization of central atom in ${ICl}_4^{-}$:

Assertion : ${B}_2$ molecule is diamagnetic.

Reason : The highest occupied molecular orbital is of $\sigma$ type.

Which one of the following molecules has zero dipole moment?

Which of the following boils at higher temperature?

Select the correct statements regarding shapes of $PC{l_5},\,Br{F_5}\,{\text{and}}\,I{F_7}$

Which of the following statements is true for an ion having ${sp}^3$ hybridisation?

The O-H bond distance in water molecule is:

The ${ONO}$ angle is maximum in :

Consider following statements.
(a) $\mathrm{He}_2$ molecule does not exist.
(b) Energy of $\sigma 2 p_z$ molecular orbital is always higher than that of $\pi 2 p_x$ and $\pi 2 p_y$ molecular orbital.
(c) The formation of molecular orbitals may be described by linear combination of atomic orbitals.
The correct statement(s) is/are

Common feature between $\mathrm{N}_2^{+}$and $\mathrm{O}_2^{+}$is that;

(I) both are isoelectronic.

(II) both have same bond order.

(III) both are paramagnetic.

(IV) both have unpaired, electron in same orbital.

Assertion : Bond order of $\mathrm{O}_2$ and $\mathrm{BN}$ is same.

Reason : $\mathrm{O}_2$ and $\mathrm{BN}$ are isoelectron

How much energy is required to dissociate one mole of $\mathrm{H}_2$ molecule?

The correct order of decreasing polarisability of ion is:

In which of the given molecules only $\pi$ bonds are present?

Decreasing order of $C\mathrm{ }-\mathrm{ }C$ bond length is
(I) ${\mathrm{C}_2}{\mathrm{H}_4}$ (II) ${\mathrm{C}_2}{\mathrm{H}_2}$
(III) ${\mathrm{C}_6}{\mathrm{H}_6}$ (IV) ${\mathrm{C}_2}{\mathrm{H}_6}$

Which one of the following molecules has the smallest bond angle?

The compound with the maximum dipole moment among the following is:

Arrange the following species in the correct order of their stability ${C}_2, {Li}, {O}_2^{+}, {He}_2^{+}$

Which has the lowest bond angle?

The correct order of decreasing polarity is

Which of the following molecules are expected to exhibit intermolecular H – bonding
(i) Acetic acid (ii) o – nitro phenol
(iii) m – nitro phenol (iv) o –boric acid
Select the correct option

Which statement is wrong?