Question

question 10 (5 points)

the names of the compounds \\(\text{fes}\\), \\(\text{nacl}\\), and \\(\text{al}_3\text{o}_2\\) all end in the suffix

a) -ide.

b) -ate.

c) -ite.

d) -ic.

Explanation:

Identify the types of compounds

The given chemical formulas are \(\text{FeS}\), \(\text{NaCl}\), and \(\text{Al}_3\text{O}_2\) (note: \(\text{Al}_3\text{O}_2\) is a typo in the question for aluminum oxide, which is typically \(\text{Al}_2\text{O}_3\), but it still represents a binary compound of aluminum and oxygen). These are all binary ionic compounds consisting of a metal cation and a non-metal anion.

Determine the naming convention

For binary ionic compounds, the metal (cation) is named first, followed by the non-metal (anion) with its ending changed to the suffix "-ide".

• \(\text{FeS}\) is iron(II) sulfide.
• \(\text{NaCl}\) is sodium chloride.
• \(\text{Al}_3\text{O}_2\) (or \(\text{Al}_2\text{O}_3\)) is aluminum oxide.

Match with the options

All three names (sulfide, chloride, oxide) end in the suffix "-ide". This matches option A.

Answer:

• (A) -ide. (Correct answer)
• (B) -ate.
• (C) -ite.
• (D) -ic.