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24 Cards in this Set
- Front
- Back
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how many quantum numbers are used to describe the energy state of electron in an atom
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4
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a spherical electron cloud surrounding an atomic nucleus would best represent
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an s orbital
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the letter designations for the first four orbital quantum numbers with the number of electrons per orbital at each sublevel are
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s:2 p:6 d:10
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the number of possble orbital shapes for the third energy leve is
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3
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the maximum number of electrons that can occupy the s orbitals at each energy level is
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2 if they have opposite spins
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the spin quantum number indicates the number of possible orientations for an electron in an orbital is
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2
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the values +1/2 and -1/2 specigy an electron's
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possible orientation in an orbital
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When n reperestns the principal quantum number of an energy levle, the number of electrons per energy level is
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2nsquared
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at n=1, the total number of electrons that could be found is
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2
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the quantum number that indicates the position of an orbital about the three axes in space is the ___ quantum number
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magnetic
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the ______ orbitals are dumbbell shaped and directed along the X, Y, and Z axes
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p
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the number of diccerent sublevels within each energy level of an atom is equal to the value of the ______ quantum number
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principle
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there are ___ orbitals for the d sublevel
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five
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____ electrons are needed to completely fill the fourth energy level
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32
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a particular main energy level can hold 18 electrons. in this case n equals
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3
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the corrct sequence in ascending energies of atomic sublevels is
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5s, 4d, 5p, and 6s
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the statement that an electron occupies the lowest energy orbital than can receive it is
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the Aufbau principle
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in the correct electron-dot notation for the phosphorous atom (15) the symrbol p is surrounded bny
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one pair of dots and three singles
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the electron configuration notation for scandium 21 would show the three highest energy electrons to have the notation
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3d14s2
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the element with the electron configuration notation 1s2 2s2 2p6 3s2 3p2 is
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Si(z=16)
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the atomic sublevel with the next highest energy after 4 p is
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5s
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orbitals of equal energy are each occupied by one electron before any one orbital is occupied by a second electron an dall electrons in a sinly occupied orbital must have the same spin
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hunds rule
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the number of electrons in the highest energy level of the argon atom is
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8
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an element with eight electrons in its outer most main energy level is called an
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noble gas
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