Naming Monoatomic Anions - Online Tutor, Practice Problems & Exam Prep

Naming Monoatomic Anions Concept 1

So the systematic name for anions represents a naming method where a nonmetal anion, as it possesses a negative charge, keeps its base name but has its ending changed to ide. The base name is just the beginning of the nonmetal's name that is unchanged. Here we have a list of common nonmetals on the periodic table, and we'll talk about each of their base names. For hydrogen, the beginning of its name is its base name, so it's hydra. For boron, it's bore. For carbon, it's carb. For silicon, it's silic. For nitrogen, it's nitri. For phosphorus, it's phospha. For oxygen, it is ox. For sulfur, it is sulf, for selenium it is selen, and for tellurium, it is tellur. For fluorine, it is fluor, for chlorine, it is chlor, for bromine, it is brom, and for iodine, it is iod. Each of these represents the beginning of their name or their base name. Keep this in mind, as we will need to know the base name of these nonmetals in order to name their anion form, the form that possesses a negative charge.

Naming Monoatomic Anions Example 1

Provide the name for the following anion. We have Se^2-. So, Se represents selenium. Remember, to name an anion, we're going to use its base name which is the beginning of its name, which is selen, and then remember in its anion form, its negative form, we just add "ide" to the end of its base name. So this would be called our selenide ion. So here that means that option C is the correct choice. Se^2- represents selenide.

Which of the following represents the oxide ion?

• A. O
• B. O^2–
• C. O₂
• D. O^3–

Which of the following choices correctly names both of the following ions:Mn⁵⁺ and P^3–.

• A. Magnesium ion and Phophate
• B. Manganese ion and phosphide ion
• C. Magnesium (V) ion and phosphide
• D. Manganese (V) ion and posphide