Ionic, Covalent, Polyatomic, and Metallic Bonding

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Questions and Answers

Which of the following compounds is most likely to exhibit ionic bonding?

  • NaCl (correct)
  • CH$_4$
  • CO$_2$
  • H$_2$O

What is the correct chemical formula for the polyatomic ion ammonium?

  • NH$_4$$^{+1}$ (correct)
  • PO$_4$$^{-3}$
  • SO$_4$$^{-2}$
  • NO$_3$$^{-1}$

Which of the following properties is characteristic of metallic bonding?

  • Brittleness
  • Low electrical conductivity
  • High ionization energy
  • Ductility and malleability (correct)

According to VSEPR theory, what is the molecular geometry of BF$_3$?

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

Which of the following bonds would be considered the most polar?

<p>F-H (B)</p> Signup and view all the answers

Which of the following best explains why metals are good conductors of electricity?

<p>Metals have a 'sea' of delocalized electrons that are free to move and carry charge. (B)</p> Signup and view all the answers

What is the predicted bond angle around the central atom in a molecule with a tetrahedral electron geometry and one lone pair of electrons?

<p>107° (B)</p> Signup and view all the answers

Which of the following compounds would be expected to have the highest lattice energy?

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

Based on electronegativity trends, which of the following bonds would be considered the most polar covalent bond?

<p>F-H (C)</p> Signup and view all the answers

Consider the following reaction: $2Na(s) + Cl_2(g) \rightarrow 2NaCl(s)$. What type of bonding is primarily responsible for holding the NaCl compound together?

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

Flashcards

Ionic Bond

Bonding through electrostatic attraction between oppositely charged ions, typically between a metal and a nonmetal.

Covalent Bond

Bonding through the sharing of electrons between two nonmetal atoms.

Polyatomic Ions

Ions composed of two or more atoms covalently bonded together that carry an overall charge.

Metallic Bonding

Bonding involving a 'sea' of delocalized electrons surrounding positively charged metal ions.

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VSEPR Theory

A model used to predict the shapes of molecules based on minimizing repulsion between electron pairs around a central atom.

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Electronegativity

A measure of an atom's ability to attract shared electrons in a chemical bond.

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Reactivity

A measure of how readily an element or compound undergoes a chemical reaction.

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Linear (2 atoms, no lone pairs)

The shape of a molecule with two bonded atoms and no lone pairs on the central atom.

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Trigonal Planar

The shape of a molecule with three bonded atoms and no lone pairs on the central atom.

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Tetrahedral

The shape of a molecule with four bonded atoms and no lone pairs on the central atom.

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Study Notes

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