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How many valence electrons are in the Lewis dot structures of B, Si, and


  1. 4
  2. 5
  3. 3
  4. None of the above

After drawing the correct Lewis structure for methanol, CH4O, answer: how many single bonds does it possess?

  1. 5
  2. 3
  3. 2
  4. 4

How is the N-Br bond described?

  1. Nonpolar covalent
  2. Pure covalent
  3. Polar covalent
  4. Ionic

How can you describe the molecule CO2 in terms of polarity?

  1. A polar molecule made from nonpolar covalent bonds
  2. A non-polar molecule made from polar covalent bonds
  3. A non-polar molecule made from nonpolar covalent bonds
  4. A polar molecule made from polar covalent bonds

Knowing the molecule BCl3 has only three covalent bonds to the boron atom, and no electron lone pair on the boron atom, what shape does the molecule have?

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