1.6 Flashcards
Ionisation Energy
1
Q
What is Ionisation energy?
A
The amount of energy required to remove one mole of electrons from one mole of a gaseous atom of an element to form one mole of a gaseous ion
2
Q
Under what conditions is ionisation energy measured and what are its units?
A
Standard conditions 298K and 101 kPa
Measured in KJ mol-1
3
Q
Why is IE a positive value?
A
It’s an endothermic process because energy is required to break the force of attraction between the electron and the central positive nucleus
