Explain Molecular Orbital Theory.
admin Molecular orbital theory was proposed by F. Hund and R.S. Mulliken in 1932.Bonds is localized to two atoms as well as molecule. This theory involves involve distribution of electrons and…
What are Homonuclear Molecules and Hetero-nuclear Molecules?
Homonuclear molecules Homonuclear molecules are formed from only one element. That is why known as homonuclear. These molecules can consist of various numbers of elements which depends on the properties…
Define Bond Length, Size of the atom and Bond Angle
What is Bond Length? Bond length is the average distance between the centers of the nuclei of two bonded atoms in a molecule. Shorter the bond length, larger is the…
What is Band Model of the Metallic Bonding?
We know that molecular orbitals are formed by overlapping of atomic orbitals. This model uses the molecular orbital approach. For example the two molecular hydrogen molecules (H2) are formed by…
What are the rules for constructing the wave functions for the hybrid orbitals?
The rules for constructing the wave functions for the hybrid orbitals are given below: 1. Firstly we have to take the linear combination of wave function of the respective atomic…
Compare the bond length, bond energy of CN and CN – species.
We will calculate the bond length, bond energy of CN and CN – species with the help of molecular orbital theory. Hence we first need the electronic configuration of the…
Assuming that the ionic character in H―Br bond is 20 percent. Calculate the fraction of the contribution of the ionic character to the valence bond wave function.
We know that combined wave function is given as: Ψ AB = Ψcovalent + λΨionic The percent ionic character is given by: X 100 Therefore, 20 = 100* 20 +…
Derive the hydrogen and hydroxyl ion concentration in aqueous solutions of acids and bases.
Hydrogen and hydroxyl ion concentration in aqueous solutions of acids and bases: The ionic product is very important quantity in aqueous solutions because it controls the relative concentrations of H+…
Calculate the pH of the 0.561 g of KOH dissolved in 200 mL of solution.
0.561 g of KOH dissolved in 200 mL of solution will have: Moles of KOH = 0.561 / 56 = 1.0 x 10-2 As molar mass of KOH = 56…
Calculate the pH if 1 mL of 13.6 M HCl is diluted with water to give 1 L of solution.Calculate the pH if 1 mL of 13.6 M HCl is diluted with water to give 1 L of solution.
1 mL of 13.6 M HCl is diluted with water to give 1 L of solution: Molarity of the diluted solution is given as: M1 V1 = M2 V2 13.6…