Atomic structure
21 hours ago
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Preview (10 questions)Show answers
  • Question 1
    30 seconds
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    Q.

    What are isotopes?

    answer choices

    atoms with the same number of protons but a different number of electrons

    atoms with the same number of protons but a different number of neutrons

    atoms with the same number of neutrons but a different number of protons

    none of the above

  • Question 2
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    Q.

    What evidence do line emission spectra provide for the existence of energy levels in atoms?

    answer choices

    different elements have the same t distribution of energy levels and so the same emission spectra

    the emission spectra only provide information about the mass of each atom

    the emission spectra are only relevant for the lighter elements where there are less electrons

    different elements have a distinct distribution of energy levels and so a distinct emission spectra

  • Question 3
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    Q.

    The Aufbau principle states that:

    answer choices

    electrons enter the lowest available energy level

    electrons enter one orbital at a time

    electrons enter an orbital in the highest energy level available

    electrons only enter the lowest energy level if the ones with a higher energy are full

  • Question 4
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    Q.

    Electrons have a discrete (fixed) amount of energy.

    answer choices

    True

    False

  • Question 5
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    Q.

    The lowest available energy state of an electron is called the:

    answer choices

    the lowest state

    the ground state

    the entry state

    the fixed state

  • Question 6
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    Q.

    When atoms receive energy, the electrons:

    answer choices

    jump to a higher energy level and fall back to a lower one, emitting energy in the form of light of a specific frequency in the process

    jump to a higher energy level and fall back to a lower one, emitting energy with a varied frequency each time

    do not absorb the energy, it gets absorbed in the nucleus instead

    jump to a higher energy level and fall back to a lower one, emitting energy in the form of heat

  • Question 7
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    Q.

    Energy levels for an electron in a hydrogen atom are

    answer choices

    randomly arranged

    evenly spaced

    further apart near the nucleus

    closer together near the nucleus

  • Question 8
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    Q.

    What is the electron configuration of an Iron atom (56-Fe)?

    answer choices

    1s2 2s2 2p6 3s2 3p6 4s2 3d6

    1s2 2s2 2p6 3s2 3p6 3d8

    1s2 2s2 2p6 3s2 3p6 4s1 3d7

    1s2 2s2 2p6 3s2 3p6 4s2 3d4

  • Question 9
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    Q.

    How many full p-orbitals are there in an atom of Bromine?

    answer choices

    9

    11

    8

    10

  • Question 10
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    Q.

    How many orbitals are there in the n = 3 energy level of an atom?

    answer choices

    4

    9

    5

    6

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