What is meant by 1st ionisation energy?
The energy required to remove an electron from 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions
TZ
Related Chemistry A Level answers
All answers ▸What is entropy?
State what is meant by the term 'first ionisation energy' and explain why the first ionisation energy of barium is lower than that of calcium
Why do first ionisation energies decrease down a group but increase across a period?
a) How can an element be classified as a transition metal, considering only electronic arrangement? (1 mark) b) In terms of electrons, why is aqueous copper(II) sulphate solution red? (3 marks) c) EDTA is a bidentate ligand. What is a bidentate ligand?(2)