9/29 notes

Question 1

what is ionization energy

Answer 1

amount of energy required to remove 1s electron from the influence of the nucleus

Question 2

how do you find number of orbitals

Answer 2

n^2

Question 3

how can orbital energies be obtained

Answer 3

photoelectron spectroscopy: shine light (keep increasing frequency and thus energy) until the electron is knocked off the atom

Question 4

what is ionization energy (potential)

Answer 4

energy required to remove the electron form the influence of the nucleus (creates a cation)

Question 5

effective nuclear charge screening/shielding

Answer 5

inner electron can screen outer electrons from the influence of the nucleus. thus outer electrons experience an effective nuclear charge less than the full nuclear charge

Question 6

how often does the 1s electron screen the 2p electron

Answer 6

practically always

Question 7

does the 1s electron effectively screen the 2s electron

Answer 7

no, it does not always effectively screen it so the 2s electron can sometimes get close to the nucleus

Question 8

compare 2s electron and 2p

Answer 8

Because 2s is less likely to be screened, the 2s electron on average experiences a greater effective nuclear charge and is harder to ionize compared to the 2p electron