Unit 4

Question 1

quantum

Answer 1

energy is the amount of energy required to move an electron from one energy level to another energy level

Question 2

quantum mechanical model

Answer 2

modern description of electrons in atoms

Question 3

👍🏾atomic orbital

Answer 3

describes probability of finding an electron at various locations around the nucleus

Question 4

👍🏾electron configuration

Answer 4

ways in which electrons are arranged in various orbitals around the nuclei of atoms

Question 5

👍🏾aufbau principle

Answer 5

electrons occupy the orbitals of lowest energy first. (way in which electrons occupy orbitals)

Question 6

Pauli Exclusion Priniciple

Answer 6

an atomic orbital may describe at most two electrons

Question 7

👍🏾Hund’s Rule

Answer 7

electrons occupy orbitals of the same energy in a way that makes the number of electrons with the same spin direction as large as possible

Question 8

👍🏾amplitudes

Answer 8

waves height from zero to crest

Question 9

wave length

Answer 9

(upside down v), distance between crests

Question 10

👍🏾frequency

Answer 10

v, # of wave cycles to pass a given point per unit of time

Question 11

Hertz

Answer 11

SI unit of cycles per second

Question 12

👍🏾electromagnetic radiation

Answer 12

radio waves, microwaves, infrared waves, visible light, ultraviolet waves, x-rays, and gamma rays

R MIVU XG

Question 13

planck’s constant

Answer 13

the constant (h), has a value of 6.63 x 10 ^-34 J•s

Question 14

photoelectric effect

Answer 14

electrons are ejected when light shines on a metal

Question 15

👍🏾photon

Answer 15

light quanta that behave as if they were particles

Question 16

👍🏾ground state

Answer 16

when electron has lowest possible energy

Question 17

Heisenberg uncertainty principle

Answer 17

states it’s impossible to know both the velocity, and the position of a particle at the same time

Question 18

energy level

Answer 18

fixed energies an electron can have