Atomic Theory

Question 1

What was 1 way John Dalton and Democritus' atomic theory was similar?

Accepted Answer

both believed atoms could not be split into smaller parts

Question 2

The first energy level of the Bohr model can hold

Accepted Answer

2 electrons

Question 3

What did Rutherford discover?

Accepted Answer

Nucleus

Question 4

James Chadwick discovered the

Accepted Answer

Neutron

Question 5

Has an equal number of protons, neutrons, and electrons

Accepted Answer

12C

Question 6

Bohr&#x27;s Energy Levels are Schrodinger&#x27;s _________________?

Accepted Answer

Principle Number 1

Question 7

How is the term "mass number" defined for a given atom or isotope?

Accepted Answer

as the sum of the protons and neutrons its nucleus contains

Question 8

Solutions to wave equations describing the shape of the space an electron occupies is the

Accepted Answer

Angular Momentum QN

Question 9

The last electron of an atom has a quantum number set equal to 5, 0, 0, -1/2. What type of atom is it?

Accepted Answer

strontium

Question 10

What element can have a mass number of 65 and an atomic number of 29?

Accepted Answer

copper

Question 11

The highest energy electron of Niobium has the set of quantum numbers

Accepted Answer

4, 2, 0, +1/2

Question 12

The average atomic mass for an atom is the weighted average of all the naturally occurring isotopes.

Accepted Answer

True

Question 13

Scientist who discovered the electron

Accepted Answer

Thompson

Question 14

A neutral atom of the isotope phosphorus-32 contains 15 protons, 17 neutrons, and 15 electrons.

Accepted Answer

True

Question 15

The structure of individual atoms can roughly be described as ________.

Accepted Answer

positively charged center and mostly empty space

Question 16

The first principle energy level to contain electrons in "d" sublevels is level 4.

Accepted Answer

False

Question 17

Successive electrons in an atom must contain sets of quantum numbers in increasing order of energy is known as

Accepted Answer

Aufbau Principle

Question 18

How many neutrons does the nucleus of the phosphorus-32 isotope have?

Accepted Answer

17

Question 19

A "p" sublevel can have different orientations of

Accepted Answer

-1, 0, +1, -2, -1, 0, +1, +2

Question 20

How many protons does the nucleus of the sulfur-35 isotope have?

Accepted Answer

16

Question 21

Which of the following is a feature of the Bohr model?

Accepted Answer

Only specific electron energies with given are stable.

Question 22

The last electron of an atom has a quantum number set equal to 4, 2, 1, +1/2. What type of atom is it?

Accepted Answer

molybdenum

Question 23

Identify the element with the last electron quantum number set of 4, 1, -1, -1/2.

Accepted Answer

selenium

Question 24

Has a nuclear charge of +15

Accepted Answer

30P

Question 25

Which of the following pairs are isotopes?

Accepted Answer

199Hg and 200Hg

Question 26

Pauli Exclusion Principle states that no two electrons can have the same set of quantum numbers.

Accepted Answer

True

Question 27

What was the significance of Millikan&#x27;s Oil Drop Experiment?

Accepted Answer

He was able to calculate the charge on an electron.

Question 28

Hund&#x27;s Rule states that electrons will occupy separate orbitals of equal energy before pairing up.

Accepted Answer

True

Question 29

What Type of Atom did Bohr Work With?

Accepted Answer

Hydrogen

Question 30

How is the term "atomic number" defined for a given atom or isotope?

Accepted Answer

as the number of protons its nucleus contains

Question 31

The Bohr Model (1913) was made to depict what?

Accepted Answer

The distance each electron was from the nucleus (energy level).

Question 32

Whose atomic model was labeled the Plum Pudding model?

Accepted Answer

Thomson

Question 33

How many protons are found in a 15N ion?

Accepted Answer

7

Question 34

Who discovered atoms are surrounded by mainly empty space?

Accepted Answer

Rutherford

Question 35

Has a mass number equal to 27

Accepted Answer

27A1

Question 36

Solutions to wave equations describing an electron&#x27;s orientation in space is

Accepted Answer

Magnetic QN

Question 37

Seleium&#x27;s highest energy electron has the quantum number set

Accepted Answer

4, 1, -1, -1/2

Question 38

What is the charge on a neutron, proton, and electron?

Accepted Answer

0, +1, -1

Question 39

A "d" sublevel can have different orientations of

Accepted Answer

-2, -1, 0, +1, +2

Question 40

What did Democritus believe?

Accepted Answer

that matter is made up of little particles

Atomic Theory

Questions 40

Atomic Theory

Questions 40