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  2. Iron compounds - Wikipedia

    en.wikipedia.org/wiki/Iron_compounds

    Iron shows the characteristic chemical properties of the transition metals, namely the ability to form variable oxidation states differing by steps of one and a very large coordination and organometallic chemistry: indeed, it was the discovery of an iron compound, ferrocene, that revolutionalized the latter field in the 1950s. [1]

  3. Ferrous - Wikipedia

    en.wikipedia.org/wiki/Ferrous

    Iron(II) chloride tetrahydrate, FeCl 2 ·4H 2 O. In chemistry, iron(II) refers to the element iron in its +2 oxidation state. The adjective ferrous or the prefix ferro-is often used to specify such compounds, as in ferrous chloride for iron(II) chloride (FeCl 2). The adjective ferric is used instead for iron(III) salts, containing the cation Fe 3+.

  4. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. [1] Expressed as a formula, the mass fraction is:

  5. Iron - Wikipedia

    en.wikipedia.org/wiki/Iron

    Iron shows the characteristic chemical properties of the transition metals, namely the ability to form variable oxidation states differing by steps of one and a very large coordination and organometallic chemistry: indeed, it was the discovery of an iron compound, ferrocene, that revolutionalized the latter field in the 1950s. [59]

  6. Mass concentration (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_concentration_(chemistry)

    In chemistry, the mass concentration ρ i (or γ i) is defined as the mass of a constituent m i divided by the volume of the mixture V. [1]= For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.

  7. Iron(II) perchlorate - Wikipedia

    en.wikipedia.org/wiki/Iron(II)_perchlorate

    Iron(II) perchlorate is the inorganic compound with the formula Fe(ClO 4) 2 ·6H 2 O. A green, water-soluble solid, it is produced by the reaction of iron metal with dilute perchloric acid followed by evaporation of the solution: [3] Fe + 2 HClO 4 + 6 H 2 O → Fe(ClO 4) 2 ·6H 2 O + H 2

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  9. Ferric - Wikipedia

    en.wikipedia.org/wiki/Ferric

    In chemistry, iron(III) or ferric refers to the element iron in its +3 oxidation state. Ferric chloride is an alternative name for iron(III) chloride ( FeCl 3 ). The adjective ferrous is used instead for iron(II) salts, containing the cation Fe 2+ .