Unit 4 Review- HONORS CHEM

Question 1

absorption

Answer 1

the electron absorbing a photon of light in order to jump to a higher energy level

Question 2

emission

Answer 2

the electron giving off a photon of light in order to jump down an energy level

Question 3

ground state

Answer 3

closer to nucleus = lower energy

Question 4

excited state

Answer 4

furthest from nucleus = high energy

Question 5

what type of relationship do frequency and wavelength have

Answer 5

shorter wavelength = higher frequency and longer wavelength = lower frequency (indirect relationship)

Question 6

what is Pauli’s Exclusion Principle

Answer 6

electrons in the same orbital, must have opposite spins

Question 7

what is Aufbau’s Principle

Answer 7

electrons occupy the lowest energy orbitals first

Question 8

what is Hund’s Rule

Answer 8

electrons will fill orbitals, in a way that all orbitals of a sub shell will have at least one electron (all with the same) before adding a second electron to any orbital of the sub shell - typically the first electron is denoted with an up arrow

Question 9

what does electron configuration and orbital notation tell us

Answer 9

tells us where electrons live in an atom. energy levels = distance from nucleus

Question 10

calculate the energy of a gamma ray was wavelength is 6.7 x 10^-7 m.

Answer 10

2.9 x 10^-19 J

Question 11

an electron drops from the 5th energy level to the 3rd energy level. calculate the wavelength of the photon with an energy of 3.37 x 10^-19 J. what is the color of the photon. fc