Naming Monoatomic Anions: Study with Video Lessons, Practice Problems & Examples

The systematic naming of anions involves changing the ending of a nonmetal's base name to "ide." For example, the base names for common nonmetals include hydra for hydrogen, bore for boron, and ox for oxygen. Understanding these base names is essential for accurately naming anions, which are negatively charged ions. This knowledge is foundational in chemistry, particularly in the study of ionic compounds and their properties.

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. We're going to 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. Phosphorus, it's phospha. Oxygen is ox. Sulfur is sulf, selenium is selin, tellurium is teller, fluorine is fluor, chlorine is chlor. Bromine is brom, and then iodine is iod. Each of these represents the beginning of their name or their base name. Just keep this in mind. We're going to have to know the base name of these nonmetals in order to name their anion form, their 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 Phosphate
• B. Manganese ion and phosphide ion
• C. Magnesium (V) ion and phosphide
• D. Manganese (V) ion and phosphide

Here’s what students ask on this topic:

What is the systematic name for the anion of chlorine?

The systematic name for the anion of chlorine is chloride. In the systematic naming method, the base name of chlorine is 'chlor,' and the ending is changed to 'ide' to indicate that it is an anion. Therefore, the anion form of chlorine, which possesses a negative charge, is called chloride (Cl^-).

How do you name the anion of sulfur?

The anion of sulfur is named sulfide. In the systematic naming method, the base name of sulfur is 'sulf,' and the ending is changed to 'ide' to indicate that it is an anion. Therefore, the anion form of sulfur, which possesses a negative charge, is called sulfide (S^2-).

What is the base name for the anion of oxygen?

The base name for the anion of oxygen is 'ox.' When naming the anion, the ending is changed to 'ide' to indicate that it is an anion. Therefore, the anion form of oxygen, which possesses a negative charge, is called oxide (O^2-).

How do you determine the base name of a nonmetal for naming its anion?

To determine the base name of a nonmetal for naming its anion, you take the beginning part of the nonmetal's name and use it as the base. For example, the base name for hydrogen is 'hydra,' for boron it is 'bore,' and for nitrogen it is 'nitri.' This base name is then followed by the suffix 'ide' to form the name of the anion. Understanding these base names is essential for accurately naming anions.

What is the systematic name for the anion of iodine?

The systematic name for the anion of iodine is iodide. In the systematic naming method, the base name of iodine is 'iode,' and the ending is changed to 'ide' to indicate that it is an anion. Therefore, the anion form of iodine, which possesses a negative charge, is called iodide (I^-).