Nuclear Chemistry

Question 1

Aufbau principle

Answer 1

Electrons are added to the lowest energy orbitals first

Question 2

Hund’s rule

Answer 2

Empty orbitals are filled with parallel spin electrons before pairing electrons of opposite spin.

Question 3

Pauli exclusion principle

Answer 3

No two electrons can have the same four quantum numbers

Question 4

Principle quantum number

Answer 4

n
n= the energy level of the orbital

Question 5

Activity of a pure solid

Answer 5

1

Question 6

Activity of a pure liquid

Answer 6

1

Question 7

Kw

Answer 7

Question 8

Ka

Answer 8

Question 9

Equation linking speed of light, frequency and wavelength

Answer 9

c=λν

Question 10

Equation linking energy, Planck’s constant and frequency

Answer 10

E2- E1 =hν

Question 11

Equation linking Planck’s constant, frequency, workfunction and K.E. of ejected electron

Answer 11

hν = Φ + E (K.E)
Quantisation means electrons are only ejected when the energy exceeds the workfunction

Question 12

Rhydberg equation

Answer 12

Question 13

Schrödinger’s equation

Answer 13

Question 14

Bohr equation

Answer 14

Question 15

Name the series

Answer 15

Question 16

Heisenberg Uncertainty Principle

Answer 16

Question 17

Ψ is the wavefunction, what is Ψ^2?

Answer 17

The probability of finding an electron in a certain space

Question 18

Solution to the Schrödinger equation

Answer 18

Question 19

Effective nuclear charge equation

Answer 19

Z eff= Z- S
Z is the nuclear charge
S is how shielded the electron is

Question 20

Order of bonding orbitals <N2
L-H

Answer 20

2σg, 2σu, 3σg, 1πu, 1πg, 3σu