Table of Contents
How do you know when to use IDE or ate in chemistry?
The name of an ionic compound ends in:
- -ide if it contains just two elements.
- -ate if it contains three or more elements, one of which is oxygen.
What are the three rules for naming compounds?
When naming molecular compounds prefixes are used to dictate the number of a given element present in the compound. ” mono-” indicates one, “di-” indicates two, “tri-” is three, “tetra-” is four, “penta-” is five, and “hexa-” is six, “hepta-” is seven, “octo-” is eight, “nona-” is nine, and “deca” is ten.
How do you name ionic compounds with variable charge metals?
The charge of the metal ion is determined from the formula of the compound and the charge of the anion….Compounds Containing a Metal Ion with a Variable Charge.
| Transition Metal Ionic Compound | Name |
|---|---|
| FeCl3 | iron(III) chloride |
| Hg2O | mercury(I) oxide |
| HgO | mercury(II) oxide |
| Cu3(PO4)2 | copper(II) phosphate |
How do you name compounds with transition elements?
The key to naming ionic compounds with transition metals is to determine the ionic charge on the metal and use roman numerals to indicate the charge on the transition metal. Write the name of transition metal as shown on the Periodic Table. Write the name and charge for the non-metal.
How do you name covalent compounds?
Rules for naming simple covalent compounds:
- Name the non-metal furthest to the left on the periodic table by its elemental name.
- Name the other non-metal by its elemental name and an -ide ending.
- Use the prefixes mono-, di-, tri-…. to indicate the number of that element in the molecule.
Do covalent compounds end in IDE?
For binary compounds, give the name of the first atom in the compound, then the Greek prefix for the number of the second atom. End the second atom with -ide. Covalent compounds are formed when two or more nonmetal atoms bond by sharing valence electrons.
How do you name metallic compounds?
The metal is named first. Its name is unchanged. The anion is named last. If it is from an element, such as chlorine, its name is changed so that one or more syllables are dropped and the ending -ide is added, such as chloride.
How do you name compounds with transition metals?
How to calculate the oxidation number of an element?
Calculating Oxidation Numbers 1 Any free element has an oxidation number equal to zero. 2 For monoatomic ions, the oxidation number always has the same value as the net charge corresponding to the ion. 3 The hydrogen atom (H) exhibits an oxidation state of +1. 4 Oxygen has an oxidation of -2 in most of its compounds.
What is the sum of the oxidation numbers in a neutral compound?
The sum of the oxidation numbers in a neutral compound is zero. 10. The sum of the oxidation numbers in a polyatomic ion is equal to the charge on the ion. The oxidation number of the sulfur atom in the SO 4 2- ion must be +6, for example, because the sum of the oxidation numbers of the atoms in this ion must equal -2.
What are the oxidation numbers of sulfur atoms?
The oxidation number of the sulfur atom in the SO42-ion must be +6, for example, because the sum of the oxidation numbers of the atoms in this ion must equal -2. SO42-: (+6) + 4(-2) = -2
Why is the naming system of a compound important?
A nomenclature, or naming system, is important when the oxidation number of elements within compounds may vary, causing the formula to be different. As we have seen, some chemical elements have a variable oxidation number. The only way to know an element’s oxidation number is to work it out from known oxidation numbers.