Identify whether the given statements about ionisation energy are correct or incorrect.
Statement A: The ionisation energy of an atom is the amount of energy that is required to remove an electron from an atom in the gas phase.
Statement B: The ionisation energy increases from top to bottom in groups and decreases from left to right across a period.
1
Both Statements A and B are correct
2
Only Statement A is correct
3
Both Statements A and B are incorrect
4
Only Statement B is correct