Naming Monoatomic Anions focuses on how a single nonmetal atom with a negative charge is named. The systematic name keeps the element’s base name and changes the ending to -ide. This applies to a nonmetal anion, so the key step is identifying the beginning of the element name and then adding ide to form the anion name.
Common base-name patterns include hydra for hydrogen, carb for carbon, nitri for nitrogen, phospha for phosphorus, ox for oxygen, sulf for sulfur, fluor for fluorine, chlor for chlorine, brom for bromine, and iode for iodine. In the same way, selenium forms the anion name selenide, and phosphorus forms phosphide. Oxygen forms oxide, which corresponds to \(O^{2-}\) . Recognizing the element, its base name, and the anion ending is the core skill for naming monoatomic anions correctly.
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.
Study Smarter with Worksheets.
Follow along with each video using our printable worksheets
0
Example
Naming Monoatomic Anions Example 1
Video duration:
37s
Play a video:
Naming Monoatomic Anions Example 1 Video Summary
The anion represented by the formula Se2- 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, Se2- 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.
0
Problem
Which of the following represents the oxide ion?
A
O
B
O2–
C
O2
D
O3–
0 Comments for
0
Problem
Which of the following choices correctly names both of the following ions:Mn5+ and P3–.
The rule for naming monoatomic anions involves taking the base name of the nonmetal element and changing its ending to -ide. The base name is derived from the beginning part of the element's name, which remains unchanged. For example, oxygen's base name is "ox," so its anion is named "oxide." Similarly, chlorine's base name is "chlor," so its anion is "chloride." This systematic naming helps identify the negative charge form of the element. The process is straightforward: identify the nonmetal, find its base name, and add -ide to indicate the anion form.
To determine the base name of a nonmetal for naming its anion, you take the beginning part of the element's name, which is typically the first syllable or root of the name. This base name remains consistent and is used as the foundation for the anion's name. For example, hydrogen's base name is "hydra," carbon's is "carb," nitrogen's is "nitri," and phosphorus's is "phospha." Once you have the base name, you add the suffix -ide to form the anion name, such as "hydride," "carbide," "nitride," and "phosphide." Knowing these base names is essential for correctly naming monoatomic anions.
Yes, common monoatomic anions are named by taking the base name of the nonmetal and adding -ide. For example, oxygen becomes oxide (ox + -ide), sulfur becomes sulfide (sulf + -ide), and fluorine becomes fluoride (fluor + -ide). Other examples include nitrogen forming nitride, phosphorus forming phosphide, chlorine forming chloride, bromine forming bromide, and iodine forming iodide. These names indicate the element in its negatively charged ion form, which is important for understanding chemical formulas and reactions involving these ions.
Knowing the charge of a monoatomic anion is important because it confirms the identity of the ion and ensures correct chemical naming and formula writing. Monoatomic anions typically carry a negative charge, which results from the nonmetal gaining electrons. For example, oxide has a charge of 2− (), while chloride has a charge of 1− (). Understanding the charge helps in balancing chemical equations and predicting compound formation. The naming convention with the -ide suffix signals the ion's negative charge, making it easier to recognize and work with these ions in chemical contexts.
Monoatomic anions and cations are named differently based on their charge and element type. Anions are negatively charged ions formed from nonmetals, and their names are derived by taking the base name of the element and adding the suffix -ide. For example, oxygen becomes oxide, and chlorine becomes chloride. In contrast, cations are positively charged ions, often formed from metals, and are usually named by simply using the element's name, such as sodium for or calcium for . Some cations with multiple charges use Roman numerals to indicate charge, but anions consistently use the -ide suffix to indicate their negative charge.
