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6 August, 07:46

Binary ionic and binary molecular compounds have what two things that are similar in their composition

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  1. 6 August, 07:53
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    Best Answer: Ionic binary compounds - - contain a metal cation and an anion made of a nonmetal or a polyatomic anion. Consider calcium phosphate:

    Ca = 2 + (Group IIA)

    PO4 = 3 - (phosphate)

    The lowest common multiple of 2 + and 3 - is 6. You must have 3 Ca2 + to make + 6; you must have 2 PO43 - to make - 6. The sum of the positive and negative charges must be equal in a compound because they are electrically neutral.

    Ca3 (PO4) 2 - - calcium phosphate

    Binary molecular compounds - - contain two or more nonmetals bonded covalently. There are no ions present because the atoms share electrons. Prefixes are used to indicate the number of atoms of each kind present. Examples are:

    SO2 - - sulfur dioxide

    N2O4 - - dinitrogen tetraoxide

    PCl3 - - phosphorous trichloride

    CO - - carbon monoxide

    The general formula for an acid is HX, where X is an anion. Binary acids contain H and a nonmetal and are named with the prefix "hydro" and the suffix "ic". Examples are:

    HCl - - hydrochloric acid

    H2S - - hydrosulfuric acid

    HF - - hydrofluoric acid

    Ternary acids contain H and a polyatomic anion. Examples are:

    H2SO4 - - sulfuric acid

    HNO3 - - nitric acid

    HNO2 - - nitrous acid

    HClO3 - - chloric acid

    HClO2 - - chlorous acid

    HClO - - hypochlorous acid

    The names of the anions are changed as follows:

    -ate anions form - ic acids

    -ite anions form - ous acids

    per ... ate anions form per ... ic acids

    hypo ... ite anions form hypo ... ous acids.
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