What is periodicity?
Periodicity is the trend in chemical and physical properties of the elements across each period of the periodic table.All elements in a period have the same number of shells, all elements in a group have the same number of electrons in their outer shells.Atomic radius decreases across a period and ionisation energy increases.However, there is a drop in ionisation energy between groups 2&3 and 5&6
JA
Related Chemistry A Level answers
All answers ▸Describe a two step reaction route that can convert 1-Butene (CH2CHCH2CH3) into a compound that is more soluble in water. Use mechanisms to aid your answer (HINT: one of the steps involves nucleophilic substitution)
Write a half-equation for the overall oxidation of ethanol into ethanoic acid.
Why does ionisation energy of elements generally decrease as you move down a group in the periodic table?
What are Van Der Waals dispersion forces?