AQA A-Level Chemistry – Periodicity Questions & Correct Answers/ Graded A+

s block : The block that belongs to hydrogen and groups 1 and 2 Elements that have their highest energy e- in s-orbitals E.G. Na 1s1 2s2 2p6 3s1 p : The block that belongs to the non-metals and metalloids Elements that have their highest energy e- in p-orbitals E.G. C 1s1 2s2 2p2 d : Transition metals and b-block are not exactly the same (Scandium and Zinc are not transition metals) Elements that have their highest energy e- in d-orbitals 1s1 2s2 2p6 3s2 3p6 4s2 3d6 2 f : The block that belongs to the lanthanides and antinides Groups : columns on the periodic table Elements have similar properties in same group 1-8 or 1-18 (if transition included) Reactivity : s-block elements (metals) are more reactive going down a group (increased shielding counteracts increased nuclear chanrge non-metals are more reactive going up a group Transition metals are rather unreactive Structure and bonding of period 3 element