Born-Lande Equation: Sample Calculation

The video tutorial explains the calculation of the Born exponent and Madeline constant, essential for determining lattice energy using the Born Lande equation. It covers the deviations from ideal lattice energy and introduces the Born Lande equation, which accounts for both attractive and repulsive forces. A detailed calculation example using rubidium bromide is provided, demonstrating the application of the equation. The video concludes with an introduction to the Bourne Meyer equation and a brief mention of the kapuscinski approximation for cases where the lattice type is unknown.

What is the primary purpose of calculating the Born Exponent and Madeline Constant?

• To measure the density of a material

• To calculate lattice energy

• To determine the color of a compound

• To find the melting point of a substance

Which equation is used to calculate real lattice energy behavior?

• Ideal Gas Law

• Born Lande Equation

• Newton's Law

• Pythagorean Theorem

In the Born Lande equation, what does the term 'D' represent?

• Diameter of the crystal

• Depth of the lattice

• Distance between two ions

• Density of the compound

What is the Madeline Constant for a rock salt structure?

• 1.75

• 2.50

• 3.00

• 4.25

How is the Born Exponent for rubidium determined?

• By its boiling point

• By its color

• By measuring its density

• By its electron configuration

What is the sum of the radii of rubidium and bromide ions in picometers?

• 400 picometers

• 359 picometers

• 94 picometers

• 265 picometers

Why is it important to convert picometers to angstroms in the Born Lande equation?

• To reduce the number of variables

• To match the units used in the equation

• To simplify the calculation

• To increase accuracy

What is the approximate lattice energy calculated for rubidium bromide using the Born Lande equation?

• -609.4 kJ/mol

• -800.0 kJ/mol

• -700.0 kJ/mol

• -500.0 kJ/mol

What is a key difference between the Born Lande and Bourne Meyer equations?

• The use of Avogadro's number

• The term multiplied by the constant

• The type of ions considered

• The temperature at which they are applied

What approximation is used when the lattice type is unknown?

• Ideal Gas approximation

• Newton's approximation

• Kapuscinski approximation

• Born Lande approximation