Binary compound
A binary compound is a chemical compound that contains exactly two different elements. Examples of binary ionic compounds include calcium chloride (CaCl2), sodium fluoride (NaF), and magnesium oxide (MgO), whilst examples of binary covalent compounds include water (H2O), and sulfur hexafluoride (SF6)
In the group of binary compounds of hydrogen a binary acid will include a hydrogen atom attached to another atom that will typically be in the 17th group of the periodic Table. These include chlorine, fluorine, bromine, iodine, and astatine. Others such as sulfur, tellurium, polonium, selenium, and arsenic are also included.
The naming convention is:
“Hydro-” + Nonmetal + “-ic” + “acid”
An example is HCl: hydrochloric acid.
If the acid is in a gaseous form or an anhydrous form, the "-ic" is replaced by "-ide" and the "acid" suffix is removed.
Nonmetal X + Nonmetal Y + "-ide."
Add the appropriate Latin prefix to each element name to denote the number of atoms of each element present in a molecule of the compound. This method is generally not used with ionic compounds (see below). For example, K2O is usually not called dipotassium monoxide; it is simply potassium oxide. The reason that it is called potassium oxide is that potassium oxide is a binary ionic compound, thus it follows the rules for binary ionic compounds. P4O6, however, would be tetraphosphorus hexoxide. Some elements beginning with vowels (Oxygen, for example) replace the vowel ending of its prefix; mono- + Oxide = Monoxide, O4 = Tetroxide, O5 = Pentoxide, and so on.
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