S1.3

Question 1

how is emission spectra produced

Answer 1

emission spectra is produced by atoms emitting photons when electrons in excited state transitions to lower energy levels

Question 2

continuous spectrum vs line spectrum

Answer 2

continuous spectrum: shows all wavelengths/frequencies/energies of light
like spectrum: shows specific wavelengths/frequencies/energies of light

Question 3

when is UV photon emitted

Answer 3

when electrons go from n>1 to n=1

Question 4

when is visible light emitted

Answer 4

when electron transitions from n>2 to n=2

Question 5

when is infrared photons emitted

Answer 5

when electron transitions from n>3 to n=3

Question 6

what is afbaus principle

Answer 6

electrons first fill sub shells of the lowest available energy (eg. 4s filled before 3d)

Question 7

hunde rule

Answer 7

every orbital in a sublevel is partially occupied first before fully occupied, partially occupied orbitals should have parallel spin

Question 8

pauli exclusion principle

Answer 8

electrons in orbital should have opposite spin