Naming Monoatomic Anions: Videos & Practice Problems

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

The systematic naming of anions involves a specific method where the name of a nonmetal anion, which carries a negative charge, is derived from its base name. This base name is essentially the initial part of the nonmetal's name, with the ending modified to "ide." Understanding the base names of common nonmetals is crucial for correctly naming their anionic forms.

Here are the base names for several common nonmetals:

• Hydrogen: Hydra
• Boron: Bore
• Carbon: Carb
• Silicon: Silic
• Nitrogen: Nitri
• Phosphorus: Phospha
• Oxygen: Ox
• Sulfur: Sulf
• Selenium: Silin
• Tellurium: Terller
• Fluorine: Fluor
• Chlorine: Chlor
• Bromine: Brom
• Iodine: Iode

To name the anion form of these nonmetals, simply take the base name and add "ide" at the end. For example, the anion for nitrogen would be nitride, and for oxygen, it would be oxide. Mastering these base names is essential for anyone studying chemistry, as it lays the foundation for understanding ionic compounds and their nomenclature.

Naming Monoatomic Anions Example 1

The anion represented by the formula Se^2- is called selenide. To derive this name, we start with the base name of the element selenium (Se). In naming anions, the suffix "-ide" is added to the base name. Therefore, Se^2- is referred to as selenide, indicating its negative charge. This naming convention is essential for understanding the properties and behaviors of various anions in chemical reactions.

Which of the following represents the oxide ion?

• A. O
• B. O^2–
• C. O₂
• D. O^3–

Answer: (B)

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

Answer: (D)

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^-).