Molecular Structure and Bonding
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Questions and Answers

What are compounds formed from?

  • Atoms with incomplete outer electron shells
  • Atoms of noble gases
  • Different elements chemically reacting and forming bonds with each other (correct)
  • Molecules such as chlorine (Cl2)

    • Why are noble gases very unreactive?

  • They do not have an overall charge
  • They have completely full outer shells and are stable (correct)
  • They have incomplete outer electron shells
  • They are made up of just one type of atom

    • What makes the atoms of other elements unstable?

  • Forming bonds with each other
  • Equal number of protons and electrons
  • Complete outer electron shells
  • Incomplete outer electron shells (correct)

    • What are ions?

    <p>Atoms or group of atoms with an electrical charge</p> Signup and view all the answers

    Why do atoms form bonds?

    <p>To become stable by having filled outer shells</p> Signup and view all the answers

    How do atoms form ions?

    <p>By having incomplete outer electron shells</p> Signup and view all the answers

    What is the process by which atoms become positive or negative ions?

    <p>Gaining or losing electrons</p> Signup and view all the answers

    Which type of ion forms when an atom gains electrons?

    <p>Negative ion</p> Signup and view all the answers

    Which type of atoms typically form positive ions?

    <p>Metal atoms</p> Signup and view all the answers

    What determines the type of chemical bond formed between atoms?

    <p>The difference in electronegativity between the atoms</p> Signup and view all the answers

    How do non-metal atoms typically form a bond with each other?

    <p>By sharing electrons</p> Signup and view all the answers

    In covalent bonding, how are the shared electrons involved in bonding?

    <p>They join the atoms together</p> Signup and view all the answers

    How is a covalent bond formed in hydrogen?

    <p>Each hydrogen atom shares its single unpaired electron</p> Signup and view all the answers

    What is the absolute value determined between participating substances in a reaction to determine the type of chemical bond?

    <p>Electronegativity difference (∆EN)</p> Signup and view all the answers

    What type of bonds result when the electronegativity difference (∆EN) between participating ions is large?

    <p>Ionic bonds</p> Signup and view all the answers

    What determines whether a substance forms a non-polar covalent bond or a polar covalent bond?

    <p>The electronegativity difference (∆EN) of the substance</p> Signup and view all the answers

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