For today Chemistry lesson, we touched on Ionisation Energy and all about the graph and the factors that affect the Ionisation Energy.

Ionisation Energy: is the minimum amount of energy required to remove the most loosely held electron from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+.

Other than that, we also learn about NUCLEAR CHARGE and SCREENING EFFECT.

*The more or the higher repulsion, the smaller the ionisation energy.
*The more or the higher attraction, the bigger the ionisation energy.