Chemical Bonding and Molecular Structure

Bromine trifluoride autoionizes to form $\ce{BrF2+}$ and $\ce{BrF4-}$. The shapes of the cation and anion are respectively ________, and ________.

Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)

The correct statement(s) about intermolecular forces is(are)

The option(s) in which at least three molecules follow Octet Rule is(are)

Based on VSEPR model, match the xenon compounds given in List-I with the corresponding geometries and the number of lone pairs on xenon given in List-II and choose the correct option.

The species formed on fluorination of phosphorus pentachloride in a polar organic solvent are

For a double strand DNA, one strand is given below:

$$5'\text{-A G T C A C G T A A G T C-}3'$$

The amount of energy required to split the double strand DNA into two single strands is _____ $\mathrm{kcal\,mol^{-1}}$.

[Given: Average energy per H-bond for A-T base pair $= 1.0\,\mathrm{kcal\,mol^{-1}}$, G-C base pair $= 1.5\,\mathrm{kcal\,mol^{-1}}$, and A-U base pair $= 1.25\,\mathrm{kcal\,mol^{-1}}$. Ignore electrostatic repulsion between the phosphate groups.]

Among $\ce{[Co(CN)4]^4-}$, $\ce{[Co(CO)3(NO)]}$, $\ce{XeF4}$, $\ce{[PCl4]+}$, $\ce{[PdCl4]^2-}$, $\ce{[ICl4]-}$, $\ce{[Cu(CN)4]^3-}$ and $\ce{P4}$ the total number of species with tetrahedral geometry is _____.

The total number of $sp^2$ hybridised carbon atoms in the major product P (a non-heterocyclic compound) of the following reaction is _____.

The correct molecular orbital diagram for $\ce{F2}$ molecule in the ground state is

Among $\ce{[I3]+}$, $\ce{[SiO4]^4-}$, $\ce{SO2Cl2}$, $\ce{XeF2}$, $\ce{SF4}$, $\ce{ClF3}$, $\ce{Ni(CO)4}$, $\ce{XeO2F2}$, $\ce{[PtCl4]^2-}$, $\ce{XeF4}$, and $\ce{SOCl2}$, the total number of species having $sp^3$ hybridised central atom is _____.

For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two $2p_z$ orbitals is(are)

The treatment of galena with $\ce{HNO3}$ produces a gas that is

Thermal decomposition of $\ce{AgNO3}$ produces two paramagnetic gases. The total number of electrons present in the antibonding molecular orbitals of the gas that has the higher number of unpaired electrons is ________.

Match List - I with List - II :

Choose the most appropriate answer from the options given below :

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

$\mathrm{PCl_5}$ is well known, but $\mathrm{NCl_5}$ is not. Because,

Given below are two statements.

Statement I: The presence of weaker $\pi$-bonds make alkenes less stable than alkanes.

Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.

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

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) $\mathrm{N_2}$

(C) $\mathrm{O_2}$

(D) $\mathrm{C_2}$

(E) $\mathrm{B_2}$

Choose the most appropriate answer from the options given below :

Number of electron deficient molecules among the following $\mathrm{PH_3}$, $\mathrm{B_2H_6}$, $\mathrm{CCl_4}$, $\mathrm{NH_3}$, LiH and $\mathrm{BCl_3}$ is