91Ó°ÊÓ

What are the guidelines for using electronegativity to predict which type of bond forms between two atoms?

How does a polar covalent bond differ from. a covalent bond? Give examples of diatomic molecules that contain a polar covalent bond and of diatomic molecules that contain a covalent bond.

Would you classify the \(C-H\) bonds in ethane \(\left(\mathrm{C}_{2} \mathrm{H}_{6}\right)\) as covalent, polar covalent, or ionic? Explain.

Lithium is a metallic element. Consider the hypothetical species dilithium, \(\mathrm{Li}_{2}\). Predict whether the bonding in such a species would be covalent, polar covalent, or ionic. Explain fully.

Which molecule has bonds that are the most polar covalent? (a) \(\mathrm{H}_{2}\) (b) \(\mathrm{CO}\) (c) \(\mathrm{H}_{2} \mathrm{~S}\) (d) \(\mathrm{H}_{2} \mathrm{O}\)

In the following molecule \(\mathrm{AB}\), one of the atoms is more electronegative than the other. Which is more electronegative, and how do you know? \(\delta-\delta+\) \(\mathrm{A}-\mathrm{B}\)

Classify the bonds in each of the following as ionic, covalent, or polar covalent. Explain each choice. (a) \(\mathrm{Br}_{2}\) (b) \(\mathrm{PCl}_{3}\) (c) LiCl (d) ClF (e) \(\mathrm{MgCl}_{2}\)

What is a binary compound? Is atmospheric oxygen an example of a binary compound?

What does the suffix -ide mean, and which element in the name of a binary ionic compound gets it?

Which element in a binary covalent compound gets the suffix -ide? Why?