| List - I | List - II | 
|---|---|
| (A) \(ψ_{MO}=ψ_A-ψ_B\) | (I) Dipole moment | 
| (B) \(µ=Q×r \) | (II) Bonding molecular orbital | 
| (C) \(\frac{N_b-N_a}2\) | (III) Anti-bonding molecular orbital | 
| (D) \(ψ_{MO}=ψ_A+ψ_B\) | (IV) Bond order | 

The correct answer is (C).
\(ψ_A-ψ_B=ψ_{MO}\) is anti-bonding molecular orbital
\(µ = Q×r\) ∼ is dipole moment
\(\frac{N_b-N_a}2\) = bond order
\(ψ_A+ψ_B=ψ_{MO}\) is bonding molecular orbital.
Which of the following statement is true with respect to H\(_2\)O, NH\(_3\) and CH\(_4\)? 
(A) The central atoms of all the molecules are sp\(^3\) hybridized. 
(B) The H–O–H, H–N–H and H–C–H angles in the above molecules are 104.5°, 107.5° and 109.5° respectively. 
(C) The increasing order of dipole moment is CH\(_4\)<NH\(_3\)<H\(_2\)O. 
(D) Both H\(_2\)O and NH\(_3\) are Lewis acids and CH\(_4\) is a Lewis base. 
(E) A solution of NH\(_3\) in H\(_2\)O is basic. In this solution NH\(_3\) and H\(_2\)O act as Lowry-Bronsted acid and base respectively. 
 
Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is (are):
The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm$^{-1}$ mol$^{-1}$ and the ionic conductance of hydroxyl and chloride ions are 170 and 70 S cm$^{-1}$ mol$^{-1}$, respectively. If molar conductance of 0.02 M solution of ammonium hydroxide is 85.5 S cm$^{-1}$ mol$^{-1}$, its degree of dissociation is given by x $\times$ 10$^{-1}$. The value of x is ______. (Nearest integer)
x mg of Mg(OH)$_2$ (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of x is ____ mg. (Nearest integer) (Given: Mg(OH)$_2$ is assumed to dissociate completely in H$_2$O)
Sea water, which can be considered as a 6 molar (6 M) solution of NaCl, has a density of 2 g mL$^{-1}$. The concentration of dissolved oxygen (O$_2$) in sea water is 5.8 ppm. Then the concentration of dissolved oxygen (O$_2$) in sea water, in x $\times$ 10$^{-4}$ m. x = _______. (Nearest integer)
Given: Molar mass of NaCl is 58.5 g mol$^{-1}$Molar mass of O$_2$ is 32 g mol$^{-1}$.
The Molecular Orbital Theory is a more sophisticated model of chemical bonding where new molecular orbitals are generated using a mathematical process called Linear Combination of Atomic Orbitals (LCAO).
Molecular Orbital theory is a chemical bonding theory that states that individual atoms combine together to form molecular orbitals. Due to this arrangement in MOT Theory, electrons associated with different nuclei can be found in different atomic orbitals. In molecular orbital theory, the electrons present in a molecule are not assigned to individual chemical bonds between the atoms. Rather, they are treated as moving under the influence of the atomic nuclei in the entire molecule.
