Atomic theory and periodic trends

Question 1

Father of the modern atomic theory.

Answer 1

John Dalton

Question 2

Building blocks of matter

Answer 2

Atoms

Question 3

Who discovered electrons?

Answer 3

Joseph John Thomson

Question 4

Who discovered protons?

Answer 4

Ernest Rutherford

Question 5

Who discovered Neutrons?

Answer 5

James Chadwick

Question 6

Electrons are discovered through observation of the ______________.

Answer 6

cathode ray tube

Question 7

Protons are discovered through ________________.

Answer 7

gold foil experiment

Question 8

Weight of the nucleus

Answer 8

atomic mass

Question 9

Atoms of the same element with different number of neutrons

Answer 9

Isotopes

Question 10

Unstable isotopes that tend to decay often by emitting certain type of radiation.

Answer 10

Radioactive isotopes

Question 11

A Danish physicist that said electrons are not stationary and created the planetary model.

Answer 11

Neils Bohr

Question 12

State where an atom has the lowest energy arrangement of electrons

Answer 12

Ground state

Question 13

Atom that absorbs energy through heat and electricity.

Answer 13

Excited state

Question 14

An Austrian physicist that said the behavior of electrons within an atom can be explained by treating it as matter waves.

Answer 14

Erwin Schrodinger

Question 15

Region surrounding the nucleus where electrons are found.

Answer 15

Orbital

Question 16

A wave function for an electron in an atom

Answer 16

atomic orbital

Question 17

specifies the energy of an electron and the size of the orbital

Answer 17

Principal quantum number

Question 18

specifies the shape of an orbital within a particular principal quantum number

Answer 18

Angular momentum quantum number

Question 19

Orientation in space

Answer 19

Magnetic quantum number

Question 20

Describes the spin of an electron

Answer 20

Spin quantum number

Question 21

The order in which electrons are placed into the orbitals is based on the order of their energy.

Answer 21

Aufbau principle

Question 22

Distance between the nucleus and the outermost electron.

Answer 22

Atomic radius

Question 23

Energy required to remove an electron from its valence shell.

Answer 23

Ionization energy

Question 24

ability to attract electrons

Answer 24

electronegativity

Question 25

Ability to accept electrons

Answer 25

electron affinity

Question 26

ability to lose electrons

Answer 26

metallic character

Question 27

electrically charged atoms

Answer 27

ions

Question 28

who created the nuclear model?

Answer 28

Ernest Rutherford

Question 29

Who created the plum pudding model?

Answer 29

Joseph John Thomson

Question 30

Symbol for atomic number

Answer 30

Z

Question 31

Symbol for atomic mass

Answer 31

M

Question 32

The formula used to determine the number of electrons in an energy orbital.

Answer 32

2n^2