Question 1 A parameter labeled n is called the repulsion parameter. it appears in the potential energy term describing the repulsion between nearest neighbor ions. How is n described by the book to be determined for a particular pair of ions? Cr It's determined experimentally. C: It's determined by Coulomb's Law. (3: It's determined by Pauli Exclusion Principle. Question 2 A parameter labeled o is described by the book and is known as the Madelung constant. It is a parameter that is determined by the sum of a large number of terms. What does this parameter depend on? O The distance between nearest neighbor ions. O The charge of the ions in the crystal. O The crystal structure.Question 3 What are the units of n, the repulsion parameter? O no units; pure number O energy units O distance units O charge unitsQuestion 4 What are the units of the Madelung constant, o? O no units; pure number O mass units O energy units O charge unitsQuestion 1 the reading provides a very nice example of thinking about an electron gas confined to a volume. The energy spacing between the ground state of ALL the electrons in the metal cube, and the first excited state is VERY small. What happens to the spacing between the ground state and first excited state for a much SMALLER cube? O The spacing increases. O The spacing decreases. O The spacing stays the same. The answer depends on what kind of metal we are considering.Question 2 There l5 an interesting connection between the idea of a ground state of a metal and the metal's temperature. Fora metallic object to be in the lowest energy:r State, what must it5 temperature be? gm: QD'C on'r GEEK Question 4 g(E) is called the 'Density of States'. It is derived by starting from Schrodinger's Equation an so is a quantum mechanical quantity. What do you get if you calculate the following integral? SEX 9( E) dE O This is the total number of different quantum states whose energies are between E, and E2. O This is the total energy of the system between E, and E2. O This is the total number of electrons whose energies are between E, and Ez