Topic 12

Question 1

Emission spectrum

Answer 1

Lyman series (UV), Balmer series (visible),

Question 2

Energy of photon

Answer 2

E=hf

Question 3

Increase in successive ionisation energy

Answer 3

1. Same nuclear charge
2. Fewer electrons
3. Harder to remove an electron from an ion with an Increasing positive charge (weak e-static before)
4. Nucleus has a greater effect on a smaller number of electrons
5. Removing electrons from a new main energy level increases ionisation energy

Question 4

Ionisation energy comparison

Answer 4

1. Shell number/shielding
2. Nuclear charge
3. Electrostatic attraction
4. Distance of outer shell electrons to the nucleus
5. Ionisation energy

Question 5

Frequency of a photon

Answer 5

F= Speed of light/wavelength

Question 6

Ionisation energy comparison

Answer 6

1. Shell number/shielding
2. Nuclear charge
3. Electrostatic attraction
4. Distance of outer shell electrons to the nucleus
5. Ionisation energy

Question 7

Transition metals

Answer 7

Incomplete d shell

Question 8

Physical properties of transition metals

Answer 8

1. Good conductor of heat/electricity
2. High melting point
3. Malleable
4. High tensile strength
5. Ductile
6. Ni, Co, Fe ferromagnetic
7. Multiple oxidation states
8. Coloured compounds