strengths of ionic and covalent bonds
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Questions and Answers

In a trigonal bipyramidal electron-pair geometry, what are the two distinct positions?

  • Equatorial and linear positions
  • Equatorial and tetrahedral positions
  • Axial and linear positions
  • Axial and equatorial positions (correct)
  • Why do lone pairs in a trigonal bipyramidal structure occupy equatorial positions?

  • Because equatorial positions have 90° bond angles
  • To create a square planar molecular structure
  • Because equatorial positions have more space available (correct)
  • To minimize lone pair-lone pair repulsions
  • What is the ideal bond angle in the axial position of a trigonal bipyramidal structure?

  • 109.5°
  • 120°
  • 90° (correct)
  • 180°
  • Which molecular structure is observed in the ClF3 molecule according to the text?

    <p>T-shaped</p> Signup and view all the answers

    In an octahedral electron-pair geometry, how many bonding regions does the central atom have?

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

    How do you determine the electron-pair geometry of a molecule based on VSEPR theory?

    <p>Count the number of regions of electron density around the central atom</p> Signup and view all the answers

    What prevents lone pair-lone pair repulsions in a square planar molecular structure?

    <p>Positioning lone pairs in equatorial locations</p> Signup and view all the answers

    What is the correct arrangement for the three bonds and two lone pairs in a ClF3 molecule?

    <p>Both lone pairs in equatorial positions</p> Signup and view all the answers

    Why do lone pairs in a trigonal bipyramidal electron-pair geometry occupy equatorial positions?

    <p>To minimize lone pair-lone pair repulsions</p> Signup and view all the answers

    In a trigonal bipyramidal structure, what is the orientation of the bond angles in the axial position?

    <p>90°</p> Signup and view all the answers

    What is the electron-pair geometry when a central atom has two lone electron pairs and four bonding regions?

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

    Which molecular structure minimizes lone pair-lone pair repulsions in an octahedral electron-pair geometry?

    <p>Square planar</p> Signup and view all the answers

    In a trigonal bipyramidal structure, how many distinct X positions are there?

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

    What is the ideal bond angle in the equatorial position of a trigonal bipyramidal structure?

    <p>120°</p> Signup and view all the answers

    Why do lone pairs occupy equatorial positions in a trigonal bipyramidal electron-pair geometry?

    <p>To minimize repulsions with other electron pairs</p> Signup and view all the answers

    What molecular structure is observed in the ClF3 molecule?

    <p>&quot;A&quot; shaped</p> Signup and view all the answers

    What is the molecular structure observed in the ClF3 molecule?

    <p>T-shaped</p> Signup and view all the answers

    In a trigonal bipyramidal electron-pair geometry, why do lone pairs always occupy equatorial positions?

    <p>To accommodate the larger lone pairs</p> Signup and view all the answers

    How many distinct X positions are there in a trigonal bipyramidal electron-pair geometry?

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

    What prevents lone pair-lone pair repulsions in the square planar molecular structure of an octahedral electron-pair geometry?

    <p>Lone pairs are 180° apart</p> Signup and view all the answers

    When a central atom has two lone electron pairs and four bonding regions, what is the resulting molecular structure?

    <p>Square planar</p> Signup and view all the answers

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