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Chapter 16 – Review “Covalent Bonding”

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Chapter 16 – Review “Covalent Bonding”. Milbank High School. Chapter 16 - Review. How many electrons are shared in a single covalent bond? How many valence electrons does an atom of any halogen have? How many electrons are shared in a double covalent bond?

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chapter 16 review
Chapter 16 - Review
  • How many electrons are shared in a single covalent bond?
  • How many valence electrons does an atom of any halogen have?
  • How many electrons are shared in a double covalent bond?
  • How many electrons does a nitrogen atom need to gain to attain a noble-gas electron configuration?
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Chapter 16 - Review
  • How many unshared pairs of electrons does the nitrogen atom in ammonia (NH3) possess?
  • How many electrons does carbon need to gain to obtain a noble-gas electron configuration?
  • What is the total number of covalent bonds normally associated with a single carbon atom in a compound?
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Chapter 16 - Review
  • How many unshared pairs of electrons are there in a molecule of hydrogen iodide?
  • How many covalent bonds are there in a covalently bonded molecule containing 1 phosphorus atom and 3 chlorine atoms?
  • What is the name given to the energy required to break a single bond?
chapter 16 review5
Chapter 16 - Review
  • How do atoms achieve noble-gas electron configurations in single covalent bonds?
  • Why do atoms share electrons in covalent bonds?
  • What is shown by the structural formula of a molecule or polyatomic ion?
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Chapter 16 - Review
  • What is the name given to the pairs of valence electrons that do not participate in bonding in diatomic oxygen molecules?
  • Which elements can form diatomic molecules joined by a single covalent bond?
  • Which of these elements does not exist as a diatomic molecule: I, Ne, H, F
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Chapter 16 - Review
  • What elements can form diatomic molecules held together by triple covalent bonds?
  • What elements can form diatomic molecules held together by double covalent bonds?
  • A covalent bond in which each atom contributes two electrons is a ___.
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Chapter 16 - Review
  • A diatomic molecule with a triple covalent bond is _____.
  • A molecule with a single covalent bond is: CO2 or Cl2?
  • Which noble gas has the same electron configuration as the oxygen in a water molecule?
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Chapter 16 - Review
  • What diatomic molecule is joined by a double covalent bond?
  • When one atom contributes both bonding electrons in a single covalent bond, the bond is called a(n) _______.
  • Once formed, how are coordinate covalent bonds different from normally formed covalent bonds?
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Chapter 16 - Review
  • What is true concerning the resonant molecule dinitrogen tetraoxide (or any resonant structure for that matter!)?
  • When do exceptions to the octet rule occur?
  • Substances in which all of the electrons are paired are said to be ______.
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Chapter 16 - Review
  • How many unpaired electrons are present in each molecule of a para-magnetic substance?
  • Which of the following types of magnetism is the strongest: paramagnetic; diamagnetic; or ferromagnetic?
  • Which of the following fails to follow the octet rule: fluorine or oxygen?
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Chapter 16 - Review
  • In which of the following compounds is the octet expanded to include 12 electrons: SO3or SCl6?
  • What is one way in which compounds that do not follow the octet rule can achieve stability?
  • Which of the following pairs of elements can be joined by a covalent bond: Mg and C; or N and C?
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Chapter 16 - Review
  • What type of covalent bond is most stable between small atoms: polar or nonpolar?
  • According to VSEPR theory, molecules adjust their shapes to keep what items as far apart as possible?
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Chapter 16 - Review
  • What causes water molecules to have a bent shape, according to VSEPR theory?
  • What is the measure of the tetrahedral bond angle?
  • What is the bond angle in a water molecule?
  • What is thought to cause the dispersion forces?
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Chapter 16 - Review
  • Which of the forces of molecular attraction is the weakest?
  • What causes hydrogen-bonding?
  • Why is hydrogen-bonding only possible with hydrogen?
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