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 ▸Explain how a buffer solution controls pH
Explain in detail what do you understand by catalyst, what makes them so useful and give two example of catalytic processes including the name catalyst used.
State and explain the trend in atomic radius down a group of the periodic table
Why doesn't chlorine form hydrogen bonds even though it is more electronegative than nitrogen?