Chpt 7 Periodicity Flashcards
(2 cards)
1
Q
1st ionisation energy
A
energy required to remove one mole of electron from each atom in a one mole pf gaseous atoms of an element , to form one mole of gaseous 1+ ions.
2
Q
second ionisation energy
A
energy required to remove one electron from each ions in one mole of gaseous 1+ ions of an element to from one mole of gaseous 2+ ions
