Periodic Table Trends: Nuclear Charge and Atomic Size

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Questions and Answers

Which factor influences ionization energy by making it easier to remove electrons as atomic size increases?

  • Valence electrons
  • Distance from the nucleus (correct)
  • Types of electrons
  • Effective nuclear charge

In which region of the periodic table are elements most likely to have a low tendency to lose electrons?

  • Alkaline earth metals
  • Non-metals (correct)
  • Transition metals
  • Alkali metals

What is the main reason why non-metals have high ionization energy?

  • They are close to the nucleus (correct)
  • They easily lose electrons
  • Their effective nuclear charge is low
  • They have a high number of shells

Which set of elements would be ranked in order of decreasing ionization energy from highest to lowest?

<p>Cl, F, I, Br (D)</p> Signup and view all the answers

What effect does effective nuclear charge have on ionization energy?

<p>Increases it (C)</p> Signup and view all the answers

What happens to the nuclear charge as you move down a group in the periodic table?

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

How is atomic radius defined for metals?

<p>One-half the distance between nuclei of adjacent atoms (C)</p> Signup and view all the answers

Why is it difficult to measure the size of an atom directly?

<p>The electron cloud enveloping the nucleus does not have a clear boundary (C)</p> Signup and view all the answers

Which factor mainly determines the atomic radius of elements as you move down a group?

<p>Number of shells (D)</p> Signup and view all the answers

How is atomic radius defined for diatomic molecules like chlorine?

<p>One-half the distance between nuclei of atoms in the molecule (A)</p> Signup and view all the answers

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