Electron-nucleus Interaction Strength Quiz
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Questions and Answers

What is the effect of increasing the size of the charges on the interaction between them?

  • The strength of the interaction decreases
  • The strength of the interaction remains the same
  • The strength of the interaction becomes zero
  • The strength of the interaction increases (correct)

    • What is the effective nuclear charge of a 2s1 electron in the ground state of Lithium?

  • A charge closer to +1 (correct)
  • A charge closer to +2
  • A charge of zero
  • The full +3 charge of the protons

    • Which of the following is true about shielding by electrons in the same energy level?

  • They shield each other to some extent (correct)
  • They only shield inner electrons
  • They completely shield each other
  • They do not shield each other at all

    • Why does the effective nuclear charge (Zeff) decrease as the distance from the nucleus increases?

    <p>Because the electrons in inner energy levels shield the outer electrons</p> Signup and view all the answers

    What is the result of the orbital shape of certain electrons?

    <p>They penetrate close to the nucleus</p> Signup and view all the answers

    Which of the following is a result of penetration?

    <p>Electrons have a higher energy level</p> Signup and view all the answers

    What is the electron configuration of the main group s-block metals and Aluminum when they lose electrons to attain a noble gas configuration?

    <p>They lose all outer electrons with the highest n value</p> Signup and view all the answers

    Which of the following elements is known to form an anion by gaining electrons to attain a noble gas configuration?

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

    What is the magnetic behavior of a species with all its electrons paired?

    <p>It is slightly repelled by a magnetic field</p> Signup and view all the answers

    What happens to the apparent mass of a paramagnetic substance when it is placed in a magnetic field?

    <p>It increases</p> Signup and view all the answers

    What is the order of electron loss in transition (d-block) metals?

    <p>ns electrons before (n-1)d electrons</p> Signup and view all the answers

    Which of the following elements exhibits paramagnetism due to the presence of unpaired electrons?

    <p>Ag (Z=47)</p> Signup and view all the answers

    Which type of orbital penetrates the nucleus the best?

    <p>s orbitals</p> Signup and view all the answers

    How does the penetration of 2p electrons compare to 2s electrons?

    <p>2p electrons have weaker penetration than 2s electrons</p> Signup and view all the answers

    Which sublevel experiences a greater attractive force to the nucleus due to deeper penetration?

    <p>2s sublevel</p> Signup and view all the answers

    In a multielectron atom, what energy order is correct for the sublevels 3p, 3s, and 3d?

    <p>3s &lt; 3p &lt; 3d</p> Signup and view all the answers

    What energy inversion may occur between the 4s and 3d sublevels in certain atoms?

    <p>4s &lt; 3d</p> Signup and view all the answers

    How does nuclear attraction change with increased penetration and decreased shielding?

    <p>Nuclear attraction increases</p> Signup and view all the answers

    What is the primary purpose of indicating the value of the principal quantum number n in an electron configuration?

    <p>To identify the type of sublevel occupied by electrons</p> Signup and view all the answers

    In an orbital diagram, what does an arrow pointing up represent?

    <p>An electron with a spin up</p> Signup and view all the answers

    What is the result of paired electrons occupying the same orbital?

    <p>The attraction forces of their magnetic poles are aligned</p> Signup and view all the answers

    What is the number of electrons in the 1s sublevel in the ground state of a hydrogen atom?

    <p>1</p> Signup and view all the answers

    What is the type of orbital that is occupied by electrons in the n = 3 level?

    <p>Only s, p, and d orbitals</p> Signup and view all the answers

    What is the purpose of writing an electron configuration?

    <p>To describe the sublevels occupied by electrons</p> Signup and view all the answers

    What is the primary characteristic of inner electrons in an atom?

    <p>They form the closed electron shells of the atom and have a much lower energy than the outer electrons.</p> Signup and view all the answers

    According to the periodic table, what is the value of n for the outermost s and p sublevels in a given period?

    <p>Period number</p> Signup and view all the answers

    What is the main reason why outer electrons are involved in chemical bonding?

    <p>They are in the highest energy level and are more easily removed.</p> Signup and view all the answers

    What is the correlation between the outer electron configuration of elements in the same group and their chemical behavior?

    <p>Similar outer electron configurations result in similar chemical behavior.</p> Signup and view all the answers

    What is the relationship between the period number and the n value of the outermost d sublevel in the periodic table?

    <p>The period number - 1 is the n value of the outermost d sublevel.</p> Signup and view all the answers

    What is the significance of the noble gas configuration in the electron configuration of elements?

    <p>It is the configuration that elements achieve when they gain or lose electrons to form ions.</p> Signup and view all the answers

    Which electron configuration is a valid possibility for helium's excited state?

    <p>1s13d1</p> Signup and view all the answers

    How many electrons are present in the 1s orbital of a Ne atom?

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

    Which of the following ions has a ground state electron configuration of 1s0?

    <p>He+</p> Signup and view all the answers

    In the orbital diagram for fluorine, which set of quantum numbers would correspond to the third electron?

    <p>n = 2, l = 1, ml = 0, ms = +1/2</p> Signup and view all the answers

    What is the likely electron configuration of the valence electron in a F atom?

    <p>2p5</p> Signup and view all the answers

    If an He atom was ionized to form He2+, how many electrons have been removed?

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

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