chapter 5

Question 1

what could rutherford’s atomic model not do?

Answer 1

explain chemical properties of elements (why they change when heated?)

Question 2

what was bohr’s proposal?

Answer 2

an electron is found in specific circular paths/orbits around the nucleus

Question 3

fixed energies an electron can have

Answer 3

energy levels

Question 4

quantum of energy

Answer 4

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

Question 5

the energy levels of an atom are not

Answer 5

equally spaced

Question 6

the higher the energy level occupied by an atom,

Answer 6

the less energy it takes to move from that energy level to the next highest

Question 7

what does the quantum mechanical model do?

Answer 7

determines the allowed energies an atom can have + the likeliness of finding an electron in various locations around the nucleus

Question 8

who devised the quantum mechanical model?

Answer 8

erin schrodinger

Question 9

the probability of finding an electron within a certain volume of space surrounding the nucleus can be represented by

Answer 9

A FUZzy cloud

Question 10

the probability is higher

Answer 10

where the cloud is more dense

Question 11

s orbitals are

Answer 11

sphere shaped

Question 12

p orbitals are

Answer 12

dumbbell shaped

Question 13

s, p, d, f number of orbitals

Answer 13

1, 3, 5, 7

Question 14

each orbital can hold how many electrons

Answer 14

2

Question 15

each sublevel can hold how many electrons

Answer 15

2, 6, 10, 14

Question 16

aufbau principle

Answer 16

electrons occupy the orbitals of lowest energy first

Question 17

pauli exclusion principle

Answer 17

an atomic orbital may describe at most two electrons

Question 18

two electrons must have

Answer 18

opposite spins

Question 19

hund’s rule

Answer 19

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