ionisation energy Flashcards
1
Q
Explain why the second ionisation energy of sodium is greater than the second ionisation energy of magnesium:
A
Na2+ has an electron lost from a 2p orbital
Mg2+ requires a loss of electron from a 3s orbital
There is less shielding in Na
2
Q
State the meaning of the term first ionisation energy:
A
Enthalpy needed to remove one mole of electrons from one mole of atoms
In gaseous state
3
Q
A
