Atomic Spectra Flashcards
1
Q
What does it mean when an atom is ‘excited’
A
When one or more of its electrons are in a higher energy level than their ground state.
2
Q
Excitation
A
Electrons can move up energy levels if they absorb a photon with the exact (discreet) energy difference between the two levels.
3
Q
Ionisation
A
When an electron is removed from an atom, the atom is ionised.
4
Q
Ionisation Energy
A
The energy needed to remove an electron from a ground state atom
5
Q
What is meant by Ground State
A
The ground state is the lowest energy level that an electron is in
6
Q
1eV
A
1.6 x 10^-19 Joules
