Elements, Quantum Numbers, And Electron Configurations

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| By Pamela Mork
Pamela Mork, General Chemistry and Organic Chemistry
Pamela, a seasoned educator with over 30 years in teaching general and organic chemistry to college students, is fueled by a passion for creating innovative and engaging learning experiences, constantly seeking new approaches to make chemistry accessible and enjoyable for her students.
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  • 1/8 Questions

    Number of electrons that can be in 3p orbitals?

    • 6
    • 8
    • 3
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About This Quiz

Explore the fundamentals of atomic structure in this quiz, focusing on electron configurations, quantum numbers, and elemental properties. Assess your understanding of orbital capacities and configurations for specific elements, enhancing your knowledge in chemistry and physics.

Elements, Quantum Numbers, And Electron Configurations - Quiz

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  • 2. 

    Spell the name of the element F.

    Explanation
    The correct answer is "fluorine" because the question asks for the name of the element with the symbol "F". Fluorine is the chemical element with the symbol F and atomic number 9. It is a pale yellow, highly reactive gas, and is the lightest halogen.

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  • 3. 

    A valid magnetic quantum number for the element Si is -3.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The magnetic quantum number (m) represents the orientation of an electron's orbital in a magnetic field. It can have integer values ranging from -l to +l, where l is the orbital angular momentum quantum number. For the element Si, the ground state electron configuration is 1s² 2s² 2p⁶ 3s² 3p². The 3p orbital can have three possible magnetic quantum numbers: -1, 0, and +1. Therefore, -3 is not a valid magnetic quantum number for the element Si.

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  • 4. 

    It is possible to have a 7d orbital?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Yes, it is possible to have a 7d orbital. In quantum mechanics, orbitals are regions in an atom where an electron is most likely to be found. The "7d" refers to the principal quantum number (n=7) and the azimuthal quantum number (l=2), which determines the shape of the orbital. The d orbitals have a complex shape and can hold a maximum of 10 electrons. Therefore, it is possible to have a 7d orbital in an atom with a high principal quantum number.

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  • 5. 

    How many electrons can have the principal quantum number of 4?

    Correct Answer
    32
    Explanation
    The principal quantum number represents the energy level or shell of an electron in an atom. The formula to calculate the maximum number of electrons in a shell is 2n^2, where n is the principal quantum number. In this case, when n=4, the maximum number of electrons in the fourth energy level is 2(4^2) = 32. Therefore, 32 electrons can have a principal quantum number of 4.

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  • 6. 

    The electron configuration for chromium is:

    • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

    • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵

    • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁴

    • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 4d⁵

    Correct Answer
    A. 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁵
  • 7. 

    Spell the name of the element P.

    Correct Answer
    Phosphorus, phosphorus
    Explanation
    The correct answer is "phosphorus." Phosphorus is a chemical element with the symbol P. It is a nonmetal that is essential for life and is found in DNA, RNA, and ATP. It is also used in fertilizers, detergents, and matches.

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  • 8. 

    What element(s) could have the quantum numbers 3, 1, -1, -1/2?

    • Sulfur

    • Oxygen

    • Aluminum

    • Sodium

    • Lithium

    Correct Answer
    A. Sulfur
    Explanation
    The quantum numbers provided are n=3, l=1, ml=-1, and ms=-1/2. These quantum numbers correspond to the third energy level (n=3), the p orbital (l=1), the px orbital (ml=-1), and the spin-down electron (ms=-1/2). Sulfur is the only element that has electrons in the 3p orbital, making it the correct answer.

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  • Aug 24, 2024
    Quiz Edited by
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  • Sep 07, 2011
    Quiz Created by
    Pamela Mork
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