What is the relationship between the first ionisation enthaplies and metallic properties?
Higher the value of ionisation enthalpy of an atom, greater will be its electronegative and non-metallic character.
For each of the following pairs state which one has greater ionisation enthalpy:
(i) I, I- (ii) Br, K.
Among the elements Li, K, Ca, S and Kr, which one has the highest first ionisation enthalpy and which one has the lowest first ionisation enthalpy?