Structure of Atom
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Questions and Answers

What is the maximum number of electrons that can occupy an orbital in an atom?

  • 2 (correct)
  • 6
  • 4
  • 1
  • Which of the following rules is used to predict the energy of an orbital in an atom?

  • Hund's Rule
  • Aufbau Principle
  • Pauli's Exclusion Principle
  • (n+l) Rule (correct)
  • What is the shape of the 3d orbital in an atom?

  • Peanut
  • Dumbbell
  • Four-leaf clover (correct)
  • Spherical
  • Which of the following elements has an unexpected electronic configuration?

    <p>Copper</p> Signup and view all the answers

    What is the orientation of the 4f orbital in an atom?

    <p>Along the z-axis</p> Signup and view all the answers

    What is the primary reason for the extra stability of half-filled and completely filled subshells?

    <p>Symmetrical distribution of electrons</p> Signup and view all the answers

    What type of energy is released during the exchange of electrons in degenerate orbitals?

    <p>Exchange energy</p> Signup and view all the answers

    What is the configuration of Cr that contributes to its extra stability?

    <p>1s 2 2 s 2 sp 6 3 s 2 3 p 6 4 s 1 3d 5</p> Signup and view all the answers

    What is the Hund's Rule explanation for the extra stability of half-filled and completely filled subshells?

    <p>Electrons with parallel spins in degenerate orbitals tend to exchange their position</p> Signup and view all the answers

    What is the primary difference between isotopes and isobars?

    <p>Number of neutrons</p> Signup and view all the answers

    What is the orientation of the F-orbital in an atom?

    <p>Dumbbell shape</p> Signup and view all the answers

    What determines the position of an element in the periodic table?

    <p>Number of protons</p> Signup and view all the answers

    What do isodiaphers have in common?

    <p>Same atomic number and mass number</p> Signup and view all the answers

    What is the primary difference between isosters and isolectronic species?

    <p>Molecular structure</p> Signup and view all the answers

    What determines the chemical properties of an element?

    <p>Number of electrons</p> Signup and view all the answers

    What is the significance of the magnetic quantum number (m) in an atom?

    <p>It represents the number of permitted orientation of subshells</p> Signup and view all the answers

    What is the relationship between the value of 'm' and the orbital angular momentum quantum number 'l'?

    <p>m varies from -l to +l</p> Signup and view all the answers

    What is the total value of 'm' for a given value of 'n'?

    <p>n^2</p> Signup and view all the answers

    What determines the maximum spin of an atom?

    <p>Number of unpaired electrons</p> Signup and view all the answers

    What is the significance of the spin of an electron?

    <p>It can be clockwise or anticlockwise</p> Signup and view all the answers

    What is the purpose of the Schrödinger wave equation in atomic physics?

    <p>To calculate the probability of finding an electron at a given point</p> Signup and view all the answers

    What is the relationship between the principal quantum number (n) and the energy of an electron in an orbit?

    <p>The energy of an electron is directly proportional to the principal quantum number</p> Signup and view all the answers

    What is the significance of the azimuthal quantum number (l) in atomic physics?

    <p>It is related to the angular momentum of an electron</p> Signup and view all the answers

    What is the maximum number of electrons that can occupy an orbit represented by the principal quantum number (n)?

    <p>2n^2</p> Signup and view all the answers

    What is the purpose of the set of four quantum numbers (n, l, m, and s) in describing an electron?

    <p>To describe the electron as a three-dimensional wave</p> Signup and view all the answers

    What does the Laplacian operator () represent in quantum mechanics?

    <p>A mathematical operator used to determine the number of subshells</p> Signup and view all the answers

    What is the significance of the wave function () in quantum mechanics?

    <p>It represents the amplitude of the electron wave</p> Signup and view all the answers

    What is the relationship between the value of 'l' and the number of principle shell 'n'?

    <p>l = n - 1</p> Signup and view all the answers

    What is the spin quantum number (s) equal to?

    <ul> <li>1/2 and - 1/2</li> </ul> Signup and view all the answers

    What is the maximum number of electrons that can occupy a subshell?

    <p>2(2l + 1)</p> Signup and view all the answers

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