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 ▸Explain the trend in first ionization energy down group 2. (3 marks)
Explain why Carbon Dioxide has a linear shape with a bond angle of 180 degrees
Explain why phenol is nitrated more readily than benzene.
State the crystal structures of SiO2 and CO2 and why one has a higher melting point than the other.