EL2 (Spectrums, Photon Calculations + Electron Configurations) Flashcards
What happens when an atom is excited?
Atoms are promoted to higher levels.
What is the speed of light?
3*10^8
What is the equation for the speed of light?
Wavelength * Frequency
What is the energy of the photon related to?
The position of the light in the electromagnetic spectrum.
What is the equation for the energy of a photon?
Planck constant * Frequency
What are the similarities of the absorption and emission spectrum?
Lines appear at the same place for an element and the thickness of the line in the spectrum tells you the abundance.
What are the differences in the absorption and emission spectrum?
Absorption is black lines on a coloured background and is of electrons moving up energy levels.
Emission is coloured lines on a black background and is of electrons moving down energy levels.
What is Bohr’s theory?
That the electron in the Hydrogen atom exists only in certain definite energy levels (shells.)
A photon of light is emitted/absorbed when the electron changes levels.
Energy of the photon is the difference between the 2 energy levels.
What does an orbital have (charge)?
A maximum negative charge equivalent to 2 electrons.
How many electrons does the first, second, third, and fourth shell hold up to?
N=1, up to 2.
N=2, up to 8.
N=3, up to 18.
N=4, up to 32.
The higher the value of n…
…the further away from the nucleus and the higher energy associated with it.
What is the sub shell configuration of quantum numbers 1-4?
N=1, S.
N=2, S&P.
N=3, S,P&D.
N=4, S, P, D & F.
What is the maximum number of electrons in the sub shells?
S=2.
P=6.
D=10.
F=14.
What is covalent bonding between?
Non-metals.
describe the lyman model
rings represent different energy levels and the frequencies of the lines correspond to changes in energy.
each arrow represents an electron dropping from a higher energy level to a lower energy level and the larger the gap between the two levels, the higher the frequency of electromagnetic radiation emitted
