State the meaning of the term first ionisation energy
Energy (or enthalpy) needed to remove one electron from one atom.
AE
Related Chemistry A Level answers
All answers ▸What is entropy?
Predict the effect of an increase in pressure and temperature on the production of ammonia in the reaction: N2(g) + 3H2(g) <-> 2NH3 (g) , where the change in enthalpy is -92.4 kJ
Explain the trend in reactivity of group 2 elements with water as you go down the group.
What is meant by the term amphoteric? and give an example of a reaction using NaOH that could be used to distinguish between a solution of amphoteric AlCl3 and non-amphoteric MgCl2.