What Do You Know About Molecular State

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What Do You Know About Molecular State - Quiz

In physics and chemistry, molecular term symbol is a short-form definition of the group representation and angular momenta that defines the state of a molecule. Take a quiz and learn more about molecular state


Questions and Answers
  • 1. 

    Molecular State is the equivalent of the term symbol for the?

    • A.

      Atomic case

    • B.

      Molecules 

    • C.

      Atomic State

    • D.

      None of the above

    Correct Answer
    A. Atomic case
    Explanation
    The term "Molecular State" is used to describe the electronic configuration and properties of a molecule, similar to how the term symbol is used to describe the electronic configuration and properties of an atom. Therefore, the correct answer is "Atomic case" as it is the most similar to the concept of "Molecular State".

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  • 2. 

    Molecular State presentation is restricted to the case of homonuclear diatomic?

    • A.

      Mass

    • B.

      Molecules

    • C.

      Proton

    • D.

      Electron

    Correct Answer
    B. Molecules
    Explanation
    The correct answer is "Molecules". In the context of the given question, "Molecular State presentation" refers to the representation or description of the state of molecules. The question asks if this presentation is restricted to the case of homonuclear diatomic molecules, which are molecules composed of two atoms of the same element. Therefore, the correct answer is "Molecules" because the presentation is not limited to a specific type of molecule, but rather encompasses all molecules.

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  • 3. 

    In the case of less symmetric molecules, the molecular term symbol contains the symbol of the?

    • A.

      Molecule

    • B.

      Group representation

    • C.

      Diatomic

    • D.

      None of the above

    Correct Answer
    B. Group representation
    Explanation
    In the case of less symmetric molecules, the molecular term symbol contains the symbol of the group representation. This is because the group representation describes the symmetry properties of the molecule, and in less symmetric molecules, the symmetry operations are not as straightforward or easily identifiable. Therefore, the group representation symbol is necessary to characterize the molecular term symbol and understand the symmetry properties of the molecule.

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  • 4. 

    In a molecular state form, S is the total spin?

    • A.

      Diatomic

    • B.

      Monolithic

    • C.

      Quantum number

    • D.

      None of the above

    Correct Answer
    C. Quantum number
    Explanation
    The correct answer is "Quantum number". In a molecular state form, the total spin is represented by the quantum number. The quantum number describes the spin of the electrons in a molecule and can have values of 0, 1/2, 1, 3/2, etc. It is used to determine the electronic configuration and properties of the molecule.

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  • 5. 

    The Omega symbol is the projection of total angular momentum along the internuclear?

    • A.

      Point

    • B.

      Region

    • C.

      Scale

    • D.

      Axis

    Correct Answer
    D. Axis
    Explanation
    The correct answer is "Axis" because the Omega symbol represents the projection of total angular momentum along the internuclear axis. In molecular physics, the internuclear axis refers to the line connecting the nuclei of two atoms in a molecule. The projection of angular momentum along this axis is represented by the Omega symbol, which indicates the orientation of the molecule's rotation. Therefore, the correct answer is "Axis."

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  • 6. 

    The plus or minus (+/-) is the reflection symmetry along an?

    • A.

      Arbitrary plane

    • B.

      Quantum place

    • C.

      Axis

    • D.

      None of the above

    Correct Answer
    A. Arbitrary plane
    Explanation
    The plus or minus (+/-) symbol represents reflection symmetry. In this context, reflection symmetry along an arbitrary plane means that the object or shape can be reflected across any plane and still maintain its original form. This means that the object is symmetrical from all angles and can be mirrored in any direction. Therefore, the correct answer is arbitrary plane.

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  • 7. 

    The cylindrical symmetry of a linear molecule ensure positives and negative?

    • A.

      Values

    • B.

      Axis

    • C.

      Diatomic

    • D.

      Scale

    Correct Answer
    A. Values
    Explanation
    The cylindrical symmetry of a linear molecule ensures that there are equal numbers of positive and negative charges distributed around the axis of the molecule. This symmetry arises due to the arrangement of atoms in a linear fashion, which results in the distribution of charges being symmetrical along the axis. Therefore, the positive and negative charges are balanced, leading to a neutral overall charge for the molecule.

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  • 8. 

    In a molecular state, the molecular orbital will be degenerate in the absence of spin-orbit?

    • A.

      Coupling

    • B.

      Axis

    • C.

      Region

    • D.

      Scale

    Correct Answer
    A. Coupling
    Explanation
    In a molecular state, the molecular orbital will be degenerate in the absence of spin-orbit coupling. This means that the energy levels of the molecular orbitals will be the same. Spin-orbit coupling is the interaction between the spin of an electron and its orbital motion, and it can cause the energy levels of the molecular orbitals to split. Therefore, in the absence of spin-orbit coupling, the molecular orbitals will remain degenerate.

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  • 9. 

    Spin-orbit coupling lifts the degeneracy of the electronic?

    • A.

      Direction

    • B.

      Motion

    • C.

      Diatomic

    • D.

      State

    Correct Answer
    D. State
    Explanation
    Spin-orbit coupling is a phenomenon in which the spin of an electron interacts with its orbital motion, causing a splitting of energy levels. This interaction is significant in atoms with heavy elements, where the spin and orbital angular momentum of the electrons are coupled together. As a result, the degeneracy of the electronic states is lifted, meaning that the energy levels that were previously degenerate now have different energies. Therefore, the correct answer is "State" because spin-orbit coupling affects the energy states of the electrons.

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  • 10. 

    In a molecular state, there is an infinite number of planes containing the?

    • A.

      Internuclear axis

    • B.

      Molecular axis

    • C.

      Perpendicular axis

    • D.

      None of the above

    Correct Answer
    A. Internuclear axis
    Explanation
    In a molecular state, the internuclear axis refers to the imaginary line connecting the nuclei of the atoms in the molecule. This axis is an important concept in molecular chemistry as it helps determine the orientation and symmetry of the molecule. The statement suggests that there is an infinite number of planes containing the internuclear axis, meaning that the internuclear axis can be found in any plane passing through the molecule. This is the correct answer as it accurately describes the relationship between the internuclear axis and planes in a molecular state.

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