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33 Cards in this Set
- Front
- Back
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what is the subatomic particle having a negligible mass and a negative charge?
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electron
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how many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 3 to 1?
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10
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which element has the following electron configuration?
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^2? |
Sn
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what is the term for the shorthand description of the arrangement of electron by sublevels according to increasing energy?
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electron configuration
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which electron sublevel follows the 5s sublevel according to increasing energy?
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4d
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which of the following is evidence for a quantized change?
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line spectrum
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what is the maximum number of electrons in the 3rd energy level?
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18
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given that the only naturally occurring isotope of aluminum is 27Al, what is its isotopic mass?
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26.98amu
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in 1895 lines were observed in the spectrum of uranium ore identical to those of helium in the spectrum of the sun. which of the following produced the lines in the helium spectrum?
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electrons dropping to a lower energy level
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which of the following energy-level changes for an electron is most energetic? a. 6-1 b. 3-1 c. 4-1 d. 5-1
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a. 6-1
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an atom has been described by the analogy" like a BB in the Astrodome", if the Astrodome represents the size of an atom, what does the BB represent?
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nucleus
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using atomic notation, indicate the isotope having having 11p, 12n, and 11e.
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23
Na 11 |
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how many photons of light are emitted when the electron in a hydrogen atom drops from energy level 3 to 1?
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1
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which of the following wavelengths of light has the highest velocity? a. 540nm b. 650nm c. 470nm d. 440nm e. all wavelengths have the same velocity
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e. all wavelengths have the same velocity
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what is the term for light energy that appears violet through red?
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visible spectrum
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what is the term for a symbolic method of expressing the composition of an atomic nucleus?
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atomic notation
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which subatomic particle has a relative charge of 0 and a mass of ~1amu?
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neutron
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which of the following energy level changes in a hydrogen atom produces a visible spectral line? a. 5-3 b. 4-2 c. 3-1 d. all of the above e. none of the above
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b. 4-2
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which of the following colors has the highest energy? a. blue b. red c. yellow d. violet e. all colors have the same energy
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d. violet
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what is the maximum number of electrons in an F energy sublevel?
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14
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how many energy sublevels theoretically exist in the 6th energy level? a. 1 b. 2 c. 3 d. 4 e. none of the above
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e. none of the above
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how many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 4-2?
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10
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which of the following colors has the highest velocity? a. red b. blue c. violet d. yellow e. all colors have the same velocity
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e. all colors have the same velocity
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what is the maximum number of electrons in the 4th energy sublevel?
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32
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which of the following represents the quantum nature of electricity? a. atom b. electron c. ion d. photon e. proton
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b. electron
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which subatomic particle has a relative charge of 1- and a mass of ~0amu?
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electron
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lithium occurs naturally as 6Li and 7Li. which isotope is most abundant?
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lithium-7
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what is the term for the value which indicates the total number of protons and neutrons in an atom of a given element?
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mass number
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which of the following energy-level changes for an electron is least energetic? a. 2-1 b. 5-4 c. 3-2 d. 4-3 e. all changes have the same energy
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b. 5-4
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what is the term for a particle of radiant energy?
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photon
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what is the term for an orbit that electrons occupy at a fixed distance from the nucleus; designated 1,2,3,4...?
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energy level
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how many electrons are in an atom of 60Co27?
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27
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which of the following gaseous elements produces a reddish-orange glow when excited in an advertising light?
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d. neon
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