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Principles Of Chemistry > Chapter 7 - Quantum Theory and the Electronic Structure of Atoms > Flashcards

Chapter 7 - Quantum Theory and the Electronic Structure of Atoms Flashcards

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1
Q

Entities emit energy only in discrete quantities or ———

A

Quanta

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2
Q

Vibrating disturbance by which energy is transmitted

A

Wave

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3
Q

Distance between identical points in succesive waves

A

Wavelength

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4
Q

Symbol for wavelength

A

Lambda

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5
Q

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

A

Frequency

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6
Q

Symbol for frequency

A

Nu

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7
Q

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

A

Amplitude

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8
Q

Product of wavelength and its frequency

A

Speed

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9
Q

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

A

Electric Field

Magnetic Field

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10
Q

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

A

Electromagnetic radiation

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11
Q

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

A

Quantum

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12
Q

Planck’s constant

A

6.63x10^-34 J•s

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13
Q

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

A

Photoelectric effect

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14
Q

Particles of light

A

Photons

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15
Q

Either continuous or line spectra or radiation emitted by substances

A

Emission spectra

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16
Q

Light emission only at specific wavelengths

A

Line spectra

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17
Q

Rydberg constant

A

2.18x10^-18 J

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18
Q

Lowest energy state of a system

A

Ground state or ground level

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19
Q

Higher in energy than the ground state

A

Excited state or excited level

20
Q

Bohr model only worked succesfully on ————-

A

Hydrogen and hydrogenlike ions

21
Q

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

A

Heisenberg uncertainty principle

22
Q

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

A

Electron density

23
Q

Wave function of an electron in an atom

A

Atomic orbital

24
Q

Tells the energy of an atom

Average distance of an electron to the nucleus from an orbital

A

Principal quantum number

25
Q

Shape of the orbital

A

Angular momentum quantum number

26
Q

Orientation of the orbital

A

Magnetic quantum number

27
Q

Direction of the spin

A

Electron spin quantum number

28
Q

Hydrogen orbital energy

A

Same number same energy

29
Q

Many- electron orbital energy

A

See electronic configuration

30
Q

How the electrons are distributed among the various atomic orbitals

A

Electronic configuration

31
Q

No two electrons can have the same set of quantum number

A

Pauli’s exclusion principle

32
Q

Contains unpaired spins and attracted by a magnet

A

Paramagnetic

33
Q

Does not contain unpaired spins and slightly repelled by magnet

A

Diamagnetism

34
Q

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

A

Hund’s rule

35
Q

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

A

Aufbau principle

36
Q

Second last row

A

Lanthanides or rare earth series

37
Q

Last row of elements

A

Actinides

38
Q

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

A

Quantum Theory

39
Q

Proponent of Quantum Theory and when

A

1900

Max Planck

40
Q

2 natures if light

A

Wave

Particle

41
Q

Proponent of photoelectric effect

A

Einstein (1905)

42
Q

Electron can only have specific energy values

Light is emitted when electrons move from one energy to lower energy

A

Bohr’s model of the atom

43
Q

De broglie wavelength formula

A

Wavelength = h/(m)(u)

h = j•s
m = kg
u = m/s
44
Q

Equation that describe both particle and wave nature of the electron

A

Schrodinger wave equation

45
Q

Symbol for wave equation

A

Pitchfork na maarte yung sides tapos flat yung gitna

46
Q

Electrons with the same value of:

A. n
B. n and l
C. n, m, and ml

A

Shell

Subshell

Orbital

Principles Of Chemistry (8 decks)

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