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Electromagnetic Spectrum
Particle Nature of Light
Quantum Theory VOCAB
Electron configuration VOCAB
Electron configurations, Lewis Dot diagrams, and
100
The distance from crest to crest is _________ and measured in ________
wavelength; meters
100
What is another way to write the unit for frequency, other than Hz?
s-1
100
What is the lowest allowable energy state of an atom?
Ground state
100
Which principle states that electrons occupy the lowest energy orbital available.
The aufbau principle
100
Draw the Lewis dot structure for Selenium
Symbol Se--then two pairs of electrons and two unpaired electrons at corners
200
The longer the wavelength, the _______ the frequency
lower
200
The minimum amount of energy that can be gained or lost by an atom is ________.
quantum or a photon (if it's light)
200
When atoms of an element ______ energy, they move to a higher energy state, also known as the _______ state.
gains or absorbs; excited
200
Which has higher energy associated with it's orbital 3d or 4s?
3d
200
Write the full electron configuration for chlorine
1s2 2s2 2p6 3s2 3p5
300
Which wavelength type has the lowest energy associated with it? The highest?
lowest = radiowaves highest = gamma rays
300
What energy is associated with with the violet portion of the electromagnetic spectrum if it has a frequency of 7.2 x 10^14 s-1?
4.7 x 10^-19 J
300
What does the Heisenberg uncertainty principle state?
It is fundamentally impossible to know precisely both the velocity and position of a particle at the same time.
300
What is the maximum number of electrons in an atomic orbital?
2
300
Write abbreviated electron configuration for phosphorus
[Ne] 3s2 3p3
400
How would you calculate the wavelength of light, given the frequency and speed?
Speed of light = wavelength x frequency, so to find the wavelength, you take the speed of light divided by the frequency.
400
What is the photoelectric effect?
The photoelectric effect occurs when photoelectrons are emitted from a metal's surface when light of a certain frequency shines on the surface.
400
What is an orbital? What are the different orbitals associated with an atom?
An orbital is a 3-d region around the nucleus which describes the electron's probable location; s,p,d,f orbitals
400
What does Hund's rule state?
Single electrons with the same spin must occupy each equal-energy orbital BEFORE additional electrons with opposite spins can occupy the same orbital.
400
What is a valence electron?
Electron in outermost orbital--typically associated with properties of the element and chemical bonding
500
An x-ray has a wavelength of 2.6 x 10 ^-10 m. What is the frequency of this wave?
1.15 x 10^18 Hz
500
How can you use atomic emission spectra to determine if an element is part of an unknown compound?
When light is passed through a glass prism, the atomic emission spectrum is produced. Each element has it's own set of frequencies emitted by the atoms of the element. No two elements have the same frequencies emitted. By comparing the unknown frequencies to that of known elements, you could determine the elements in a compound.
500
What does the principal energy level tell you? (It's the number to start electron configuration..ie: 1s....2s....3p...
The orbital size and the distance it is from the nucleus.
500
How do you use noble gases to shorthand electron configuration?
Use bracketed symbols of noble gas that is prior to your element and proceed from the noble gas with the rest of the electron configuration.
500
Draw the orbital diagram for arsenic
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3