Module #2: The atom revisited

Question 1

Electron Volt

Answer 1

The energy gained by an electron falling through a potential difference of exactly one volt.

Question 2

Equation 2.12

Answer 2

E = -Rh x Z2 x (1/n)2

Question 3

Equation 2.16, radius equation

Answer 3

r = (0.529 Å) x n2/Z

Question 4

Pauli exclusion principle

Answer 4

No two electrons in the same atom can have the same quantum numbers.

Question 5

Hund’s rule

Answer 5

The higher the total spin, the greater the stability of an Atom. As a result, for a given value of l, all orbitals corresponding to different values of “ml” must be filled with one electron (ms=+1/2 by convention) before they are filled with a second electron (ms = -1/2).

Question 6

Degenerate Orbitals

Answer 6

Orbitals that have identical energy levels

Question 7

Jumping equation

Answer 7

Delta E = Rh x Z2 x [(1/n initial)2 - (1/n final)2]