Periodicity Flashcards
1
Q
Define the term ‘first ionisation energy’
A
The energy required to remove one electron from each atom in a mole of atoms in the gas phase (KJ mol^-1)
2
Q
Define the term ‘group’
A
A vertical column in the periodic table
3
Q
Define the term ‘period’
A
A horizontal row in the periodic table
4
Q
Define the term ‘periodicity’
A
The regular repeating of properties of the elements across the periodic table
5
Q
Define the term ‘successive ionisation energies’
A
A measure of the energy required to remove each electron in turn
