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 (B)</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 (A)</p> Signup and view all the answers

Which of the following is a result of penetration?

<p>Electrons have a higher energy level (D)</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 (D)</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 (C)</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 (D)</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 (A)</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 (A)</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) (B)</p> Signup and view all the answers

Which type of orbital penetrates the nucleus the best?

<p>s orbitals (C)</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 (B)</p> Signup and view all the answers

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

<p>2s sublevel (D)</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 (B)</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 (B)</p> Signup and view all the answers

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

<p>Nuclear attraction increases (D)</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 (A)</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 (D)</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 (D)</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 (D)</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 (B)</p> Signup and view all the answers

What is the purpose of writing an electron configuration?

<p>To describe the sublevels occupied by electrons (A)</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. (D)</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 (B)</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. (B)</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. (C)</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. (B)</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. (D)</p> Signup and view all the answers

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

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

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

<p>2 (D)</p> Signup and view all the answers

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

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

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

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

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

<p>2 (B)</p> Signup and view all the answers

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