Atomic + Molecular Structure

Question 1

What did Dalton’s Atomic Theory state?

Answer 1

• All elements are composed of atoms
• Atoms of 1 element differ from atoms of other elements
• All compounds of composed of different atoms
• No destruction/construction of atoms

Question 2

Protons weigh about

Answer 2

1 amu

Question 3

The atomic # (or Z) equals to the

Answer 3

Number of protons

Question 4

The further the valence electron is from the nucleus the

Answer 4

Weaker the attraction is between the electron and the nucleus

Question 5

Rutherford stated that the atom has a

Answer 5

Densely-charged nucleus which accounts for a small portion of the volume

Question 6

Planck developed the first quantum theory, proposing that

Answer 6

Energy is emitted as electromagnetic radiation in quanta

Question 7

What is the energy of a quantum?

Answer 7

E = h • f

Question 8

What is the angular momentum (L) according to the Bohr model?

Answer 8

L = nh / 2π

Question 9

The energy of the electron is given by

Answer 9

E = -Rh / n^2

Question 10

The energy of an electron is related to the

Answer 10

Orbital radius

Question 11

The smaller the radius means the

Answer 11

Lower the energy

Question 12

What is the electromagnetic energy of protonss?

Answer 12

E = h•c / wavelength

Question 13

Each element maintains its own

Answer 13

Atomic emission spectrum

Question 14

The Lyman series describes emission to

Answer 14

n = 1 (UV)

Question 15

The Balmer series describes emission to

Answer 15

n = 2 (UV + Vis)

Question 16

The Pascher series describes emission to

Answer 16

n = 3 (Inf)

Question 17

What is the equation to find energy level transitions?

Answer 17

E = -Rh (1/ni^2 - 1/nf^2)

Question 18

The pauli exclusion principle states that

Answer 18

No 2 electrons in a given atom have the same 4 quantum numbers

Question 19

The max number of n correlates to the

Answer 19

Number of the period

Question 20

The larger the n the

Answer 20

Higher the energy level + radius

Question 21

The max number of electrons in a SHELL is denoted by

Answer 21

2n^2

Question 22

As the distance from the nucleus increases, the

Answer 22

Difference in energy between adjacent shells decreases

Question 23

The azimuthal quantum number (l) ranges from

Answer 23

0 to n-1

Question 24

When l = 0, the orbital is

Answer 24

S

Question 25

When l = 1, the orbital is

Answer 25

P

Question 26

When l = 2, the orbital is

Answer 26

D

Question 27

When l = 3, the orbital is

Answer 27

F

Question 28

The maximum number of electrons found in a subshell can be found by

Answer 28

4l + 2

Question 29

The greater the value of l, the greater the

Answer 29

Energy

Question 30

The magnetic quantum number (ml) ranges from

Answer 30

l to -l

Question 31

Two electrons in the same orbital must have

Answer 31

Opposite spins

Question 32

Electrons in different orbitals with the same ms values have

Answer 32

Parallel spins

Question 33

Electrons in the same orbitals with different ms values have

Answer 33

Paired spins

Question 34

The Aufbau principle states that

Answer 34

Subshells are filled from the lowest to highest energy

Question 35

Which equation allows for one to determine subshell energy?

Answer 35

(n + 1)

Question 36

The lower the sum of (n+1) the

Answer 36

Lower the energy

Question 37

Hund’s Rule states that

Answer 37

Orbitals are filled first before pairing

Question 38

When a molecule is paramagnetic it means that it contains

Answer 38

Unpaired electrons

Question 39

How does the magnetic field act when an atom is paramagnetic?

Answer 39

It aligns the spin of the electrons and attracts them

Question 40

Diamagnetic atoms lack

Answer 40

Unpaired electrons

Question 41

Diamagnetic atoms are repelled by the

Answer 41

Magnetic field

Question 42

Which atoms are stable?

Answer 42

Ones with half-filled or fully-filled subshells

Question 43

Half-filled subshells are found in columns

Answer 43

6 and 12