Khoom

  • Manganese ntsev

    Manganese ntsev

    Tus kab permanganate yog lub npe rau ib qho tshuaj uas muaj cov tshuaj manganite, (MnO-4). Vim hais tias manganese yog nyob rau hauv lub xeev +7 oxidation, permanganate ion yog ib qho muaj zog oxidising. Cov ion muaj tetrahedral geometry. Permanganate daws yog xim ntsuab hauv cov xim thiab muaj ruaj khov hauv nruab nrab los yog ib nyuag alkaline xov xwm.

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  • Chromium

    Chromium

    Chromate ntsev muaj chromate anion, CrO2-4. Dichromate ntsev muaj dichromate anion, Cr2O2-7. Lawv yog oxyanions ntawm chromium nyob rau hauv lub xeev 6+ oxidation. Lawv muaj mob oxidizing cov neeg ua haujlwm. Nyob rau hauv kev daws kua, chromate thiab dichromate ions yuav tsum interconvertible.

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  • Fluorosilicate

    Fluorosilicate

    Dawb tsw ntxhiab tsw thiab tsis siv pa taws los yog cubic siv lead ua los yog hmoov. Qhov ntom ntom ntub yog 3.08 (hexagonal) los yog 2.665 (cubic, 17 ° C). Nws yog hygroscopic. Ib me ntsis soluble nyob rau hauv dej, soluble nyob rau hauv hydrochloric acid, solubility me ntsis nce nrog nce kub. Insoluble hauv cawv. Hydrolysis hauv dej kub ua rau silicic acid.

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