Question
STEPS FOR NAMING A BINARY COVALENT COMPOUND: Decide whether the following compounds contain ionic or covalent bonds. CO_(2) __ N_(2)O __ PtO HgCl_(2) __ SiO_(2) __ SrBr_(2) Why is hydrogen unique among the elements? What are the 7 diatomic elements? __ __ __ Why can we not use the same rules as we did with ionic compounds? __ How do we deal with this problem? __
Answer
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Bertram
Master · Tutor for 5 years
Answer
1. CO2 - covalent, N2O - covalent2. PtO - ionic, SrBr2 - ionic3. SiO2 - covalent4. Hydrogen is unique because it can form both covalent and ionic bonds.5. The seven diatomic elements are H2, N2, O2, F2, Cl2, Br2, and I2.6. A binary covalent compound is composed of two different nonmetals.7. We cannot use the same rules with covalent compounds as with ionic ones because multiple distinct molecules can be formed from the same elements.8. The issue is resolved by including numerical prefixes in the name to represent the number of atoms of each element.9. First, identify the two elements. The first is usually a nonmetal or metalloid, while the second is always a nonmetal. Add the appropriate Greek prefix to each, and append '-ide' to the end of the second element.
Explanation
1. Carbon dioxide (CO2) and dinitrogen monoxide (N2O) contain covalent bonds because they are composed of only nonmetals. Any compound made from nonmetals will be a covalent compound.2. PtO and SrBr2 are ionic compounds since they are composed of both metal cations and nonmetal anions. The Pt in PtO is a metal, and Sr in SrBr2 is a metal. Ionic compounds are made up of metals and nonmetals.3. Silicon oxide (SiO2) falls under the covalent category as Si is a metalloid and O is a nonmetal.4. Hydrogen is unique among the elements because it is capable of bonding either covalently with nonmetals by sharing pairs of electrons, or ionically with metals by gaining or losing one electron. 5. The seven diatomic elements are hydrogen (H2), nitrogen (N2), oxygen (O2), fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2).6. A binary covalent compound is composed of two different elements, usually nonmetals.7. Binary covalent compounds cannot be named using the same steps as ionic compounds because they often exist in several different structural forms known as allotropes, each with a different arrangement and number of atoms, both can also combine in more than one way to create distinct molecules.8. This problem is dealt with by using a numerical prefix in the name to specify the number of atoms of each element present in the compound.9. The steps for naming a binary covalent compound are: Identify the first and second elements; use the appropriate Greek prefix to indicate the number of atoms of each; and end the second element's name with '-ide'.