Chapter 6 Flashcards
Electromagnetic radiation is
Everywhere and is eneergy that travels in a continuous wavelike manner
Visible spectrum goes in order from left to right of
Rainbow backwards
All emr travels at
The speed of light (3.0 * 10^8 m/s)
Wavelength and frequency (v) are
Inversely related
Order of spectrum
Gammaray➡️xray➡️uv➡️visual➡️infared➡️microwave➡️fm➡️am➡️long radio waves
Frequency times wavelength equals
Speed of light
1m=
1*10^9 nm
Max plank proposed that
Atoms could only absorb(or release) energy in discrete chucks Called quantum
A quantum of light energy is
A photon
He also proposed that energy could be calculated by:
E=h*v
Planks constant
6.63*10^-34
When atoms absorb energy
They produce unique spectral lines
High density and hot matter produce
Continuous spectrum (white light)
Hot gas produces
Emission spectrum
Cold gas produces
Absorption spectrum
Neil’s Bohr showed that spectral lines are caused by
quantized jumps of electrons between energy levels
Bohr calculated the energy for each level
E= -2.18 * 10^-18J / n^2
Black ________ all
White ________ all
Absorbs
Reflects
Wavelength visible spectrum
400-700 nm
Infared radiation we feel as
Heat
Speed of light =
Frequency times wavelength
Energy equals
Planks comstant times frequency
The colored spectral lines on the emission spectrum are the result of
Electrons jumping from one energy level to another
The difference between energy levels of electrons jumping from one energy level to another is
(-2.18 * 10^-18)(1/final squared - 1/initial squared)
All electromagnetic radiation tracked at
The speed of light
Lyman’s series ends at energy level
1
Balmer series ends at energy level
2
Vance electrons
Participate in bonding and determine how an atom will behave
Core electrons are
Everything except for the balance electrons
Aufbau principle
Electrons enter orbitals of lowest energy first
Pauli exclusion principle
An orbital can hold a maximum of 2 electrons. Electrons in the same orbital have opposite spins
Hunts rule
Electrons will half fill degenerate orbitals until they have to double up
Our current understanding of the atom is the
Quantum mechanical model
Heisenberg uncertainty principle
We can’t know the exact location of an electron we can only speak of probability
Schrodinger
Used his wave equation to map out probable electron locations
S
O
P
Dumbbell
D
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F
🌼
Visible light is a type of
Electromagnetic radiation
