Electronic Structure

Question 0

Successive ionisation energy

Answer 0

This is a measure of the energy required to remove each e- in turn.

Question 1

(First) Ionisation energy

Answer 1

The first ionisation energy of an element is the energy required to remove 1 e- from each atom in 1mol of gaseous atoms to form 1mol of gaseous 1+ ions.

Question 2

Orbital

Answer 2

An atomic orbital is a region within an atom that can hold up to two e- with opposite spins.