Question

exit ticket 17 (module 7 - lesson 1)
question 3. which of the following are true about covalent bonds? (select all that apply:)
□ covalent bonds involve the sharing of electrons.
□ covalent bonds occur only between metals.
□ covalent bonds can form single, double, or triple bonds.
□ covalent bonds involve the loss of electrons in order to form cations.
□ covalent bonds result from the transfer of electrons.

Explanation:

1. For the statement "Covalent bonds involve the sharing of electrons": By definition, covalent bonds are formed when atoms share one or more pairs of electrons. So this is true.
2. For the statement "Covalent bonds occur only between metals": Covalent bonds typically occur between non - metals (or between a non - metal and a metalloid in some cases), while ionic bonds are more common between metals and non - metals. So this is false.
3. For the statement "Covalent bonds can form single, double, or triple bonds": In covalent bonding, depending on the number of electron pairs shared between atoms, single (1 pair), double (2 pairs), or triple (3 pairs) bonds can be formed. For example, in $\ce{H2}$ there is a single bond, in $\ce{O2}$ a double bond, and in $\ce{N2}$ a triple bond. So this is true.
4. For the statement "Covalent bonds involve the loss of electrons in order to form cations": The loss of electrons to form cations is a characteristic of ionic bonding (where metals lose electrons to form cations and non - metals gain electrons to form anions). In covalent bonding, there is no loss or gain of electrons in the same sense, just sharing. So this is false.
5. For the statement "Covalent bonds result from the transfer of electrons": The transfer of electrons is characteristic of ionic bonding. Covalent bonds result from the sharing of electrons. So this is false.

Answer:

• Covalent bonds involve the sharing of electrons.
• Covalent bonds can form single, double, or triple bonds.