Chapter 7 - Quantum Theory and the Electronic Structure of Atoms

Question 1

Entities emit energy only in discrete quantities or ———

Answer 1

Quanta

Question 2

Vibrating disturbance by which energy is transmitted

Answer 2

Wave

Question 3

Distance between identical points in succesive waves

Answer 3

Wavelength

Question 4

Symbol for wavelength

Answer 4

Lambda

Question 5

The number of waves that pass through a particular point in 1 second

Answer 5

Frequency

Question 6

Symbol for frequency

Answer 6

Nu

Question 7

Vertical distance from the midline of a wave to the peak or trough

Answer 7

Amplitude

Question 8

Product of wavelength and its frequency

Answer 8

Speed

Question 9

Two components of electromagnetic wave that’s perpendicular to each other

Answer 9

Electric Field

Magnetic Field

Question 10

The emission and transmission of energy in the form of electromagnetic waves

Answer 10

Electromagnetic radiation

Question 11

Smallest quantity of energy that can be emitted (or absorbed) in the form of electromagnetic radiation

Answer 11

Quantum

Question 12

Planck’s constant

Answer 12

6.63x10^-34 J•s

Question 13

Electrons are ejected from the surface of certain metals exposed to light to at least a certain minimum frequency

Answer 13

Photoelectric effect

Question 14

Particles of light

Answer 14

Photons

Question 15

Either continuous or line spectra or radiation emitted by substances

Answer 15

Emission spectra

Question 16

Light emission only at specific wavelengths

Answer 16

Line spectra

Question 17

Rydberg constant

Answer 17

2.18x10^-18 J

Question 18

Lowest energy state of a system

Answer 18

Ground state or ground level

Question 19

Higher in energy than the ground state

Answer 19

Excited state or excited level

Question 20

Bohr model only worked succesfully on ————-

Answer 20

Hydrogen and hydrogenlike ions

Question 21

It is impossible to simultaneously both the momentum p and the position of a particle with certainty

Answer 21

Heisenberg uncertainty principle

Question 22

Gives the provability that an electron will be found in a particular region of an atom

Answer 22

Electron density

Question 23

Wave function of an electron in an atom

Answer 23

Atomic orbital

Question 24

Tells the energy of an atom

Average distance of an electron to the nucleus from an orbital

Answer 24

Principal quantum number

Question 25

Shape of the orbital

Answer 25

Angular momentum quantum number

Question 26

Orientation of the orbital

Answer 26

Magnetic quantum number

Question 27

Direction of the spin

Answer 27

Electron spin quantum number

Question 28

Hydrogen orbital energy

Answer 28

Same number same energy

Question 29

Many- electron orbital energy

Answer 29

See electronic configuration

Question 30

How the electrons are distributed among the various atomic orbitals

Answer 30

Electronic configuration

Question 31

No two electrons can have the same set of quantum number

Answer 31

Pauli’s exclusion principle

Question 32

Contains unpaired spins and attracted by a magnet

Answer 32

Paramagnetic

Question 33

Does not contain unpaired spins and slightly repelled by magnet

Answer 33

Diamagnetism

Question 34

The most stable arrangement of electrons in subshells is the one with the greatest number of parellel spins

Answer 34

Hund’s rule

Question 35

Protons are added one by one to the nucleus to build up the elements, electrons are similarly added to the atomic orbitals

Answer 35

Aufbau principle

Question 36

Second last row

Answer 36

Lanthanides or rare earth series

Question 37

Last row of elements

Answer 37

Actinides

Question 38

Enables us to predict and understand the critical role that electrons play in chemistry

Answer 38

Quantum Theory

Question 39

Proponent of Quantum Theory and when

Answer 39

1900 | Max Planck

Question 40

2 natures if light

Answer 40

Wave | Particle

Question 41

Proponent of photoelectric effect

Answer 41

Einstein (1905)

Question 42

Electron can only have specific energy values | Light is emitted when electrons move from one energy to lower energy

Answer 42

Bohr’s model of the atom

Question 43

De broglie wavelength formula

Answer 43

Wavelength = h/(m)(u) ``` h = j•s m = kg u = m/s ```

Question 44

Equation that describe both particle and wave nature of the electron

Answer 44

Schrodinger wave equation

Question 45

Symbol for wave equation

Answer 45

Pitchfork na maarte yung sides tapos flat yung gitna

Question 46

Electrons with the same value of: A. n B. n and l C. n, m, and ml

Answer 46

Shell Subshell Orbital