things to memorise

Question 1

relative atomic mass

Answer 1

average mass of an atom compared to 1/12th of an atom of carbon-12

Question 2

first ionisation energy

Answer 2

enthalpy change for X —> X- + e-
the minimum energy required to remove one mole of electrons from one mole of gaseous atoms

Question 3

general first ionisation trends across a period

Answer 3

increases
number of protons increases
shielding stays the same
increased attraction between nucleus and outer electrons

Question 4

deviation 1 aluminium

Answer 4

first electron in p-orbital
further from nucleus
higher energy

Question 5

deviation 2 sulfur

Answer 5

pair of electrons
in p-orbital
repel each other

Question 6

reasons why a sample is ionised in a mass spectrometer

Answer 6

acceleration
detection

Question 7

4 most electronegative elements

Answer 7

nitrogen oxygen fluorine chlorine