History and Properties of the Periodic Table
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Questions and Answers

What is the opposite of electronegativity?

  • Valence electron attraction
  • Ionization energy
  • Electropositivity (correct)
  • Electron affinity

Why does oxygen have a higher electronegativity than sulfur?

  • Oxygen has 2 energy levels, while sulfur has 3
  • Oxygen has 8 protons in the nucleus whereas sulfur only has 7
  • A bonding pair of electrons will experience more attraction from the oxygen’s nucleus than from sulfur’s (correct)
  • The bonding electrons in sulfur are further away from the nucleus of the atom

Why is oxygen more electronegative than nitrogen?

  • A bonding pair of electrons will experience more attraction from the oxygen’s nucleus than from nitrogen’s (correct)
  • Oxygen has 2 energy levels, while nitrogen has 3
  • Oxygen has 8 protons in the nucleus whereas nitrogen only has 7
  • The bonding electrons in nitrogen are further away from the nucleus of the atom

Which element is the most electronegative?

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

What happens to electropositivity as the number of electron shells increase?

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

What is the trend of atomic size as you move across a period from left to right?

<p>Atomic size decreases (A)</p> Signup and view all the answers

What happens to ionization energies as you move down a group?

<p>Ionization energies decrease (B)</p> Signup and view all the answers

How does adding an electron affect a stable element?

<p>The element absorbs energy (B)</p> Signup and view all the answers

What is the definition of ionization energy?

<p>The energy needed to remove an electron from an atom (B)</p> Signup and view all the answers

When an electron is added to a neutral atom in the gaseous state, what is the resulting change in energy known as?

<p>Electron affinity (C)</p> Signup and view all the answers

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