topic 1 atomic structure

1.1.7 state and explain qualitatively the variations in atomic radius and ionic radius across a period and down a

group

1.2.3 state that and explain why isotopes of the same element have the same chemical properties

1.2.4 state that and explain why isotopes of the same element have different physical properties, limited to

mass and density

1.3.5 explain the electronic configurations in terms of energy of the electrons and inter-electron repulsion

explain the electronic configurations in terms of energy of the electrons and inter-electron repulsion

1.4.3 identify and explain the trends in ionisation energies across a period and down a group of the Periodic

Table

1.4.6 explain the factors influencing the ionisation energies of elements in terms of nuclear charge,

atomic/ionic radius, shielding by inner shells and sub-shells and spin-pair repulsion