Yahoo Web Search

  1. About 157,000 search results

  1. Aug 07, 2022 · sodium tetrachloroaluminate: 7784-16-9 AlCl 4 Rb: aluminium rubidium tetrachloride: 17992-02-8 AlCl 6 K 3: potassium hexachloroaluminate: 13782-08-6 AlCl 6 Na 3: sodium hexachloroaluminate: 60172-46-5 AlF: aluminium monofluoride: 13595-82-9 AlFO: aluminium monofluoride monoxide: 13596-12-8 AlF 2: aluminium difluoride: 13569-23-8 AlF 2 O ...

    • 化學性質
    • 用途
    • 穩定性
    • 外部連結

    碘化鈉是一種強還原劑,可以將Fe3+、Cu2+、MnO4-、鹵素等還原,如: 1. 2 FeCl3 + 2 NaI → 2 FeCl2 + 2 NaCl + I2 2. 2 NaI + Br2 → 2 NaBr + I2 和其他碘化物一樣,碘化鈉可以和碘作用,形成I3-: 1. NaI + I2 → NaI3 碘化鈉在水中可以解離出I-,參與沉澱反應: 1. Ag+ + I−→ AgI↓ 2. Bi3+ + 3I− → BiI3↓

    食物添加物

    碘化鈉及碘化鉀通常被用來治療和預防碘缺乏症,市售食鹽常摻有少許碘化鈉。

    有機合成

    碘化鈉之丙酮溶液也用於芬克爾斯坦反應(將有機氯化合物轉化為有機碘化合物),機理是氯化鈉不溶於丙酮而碘化鈉可溶,從而促使反應進行。 1. R-Cl + NaI → R-I + NaCl

    核醫學

    一些放射性碘鹽,包括Na125I及Na131I可做為放射性藥劑,用於治療甲狀腺癌及甲狀腺功能亢進或是造影技術中的放射性示蹤劑,(參見碘的同位素)

    碘化物(包括碘化鈉)可被大氣中的氧氣 (O2)以可偵測的速度氧化成碘 (I2)。I2及I− 可錯合成黃色的三碘陰離子,與碘化鈉的白色不同。水可加速此氧化過程,碘化物也會以光氧化過程變為I2,因此碘化鈉應儲放於暗處,並保持低溫低濕度。

    國際化學品安全卡 1009(英文) (頁面存檔備份,存於網際網路檔案館)
    碘化鈉在醫學上的應用(英文) (頁面存檔備份,存於網際網路檔案館)
  2. Aug 05, 2022 · This is a list of radioactive nuclides (sometimes also called isotopes ), ordered by half-life from shortest to longest, in seconds, minutes, hours, days, and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds. [1] Contents 1 10−24 seconds (yoctoseconds) 2 10−21 seconds (zeptoseconds)

  3. People also ask

    What is a good source of sodium?

    Why is sodium called a metal?

    What family does sodium belong to?

    What is the origin of the name sodium?

  4. de.wikipedia.org › wiki › KaliumKalium – Wikipedia

    1 day ago · Kalium (lateinisch, aus arabisch ... Bezeichnung für Kalium), weil man es aus Pottasche gewinnen kann, das andere, wenige Tage später erstmals gewonnene, Sodium ...

    • Kalium, K, 19
    • 1, 4, s
  5. Aug 07, 2022 · Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, most commonly found in nature as quartz and in various living organisms. [5] [6] In many parts of the world, silica is the major constituent of sand.

    • 2,950 °C (5,340 °F; 3,220 K)
    • 1,713 °C (3,115 °F; 1,986 K) (amorphous): 4.88  to
    • SiO₂
    • 60.08 g/mol
  6. Aug 04, 2022 · They are helium, neon, argon, krypton, xenon, and radon. A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium, we make the substitution of [ Ne] for the 1 s 2 2 s 2 2 p 6 part of the configuration.

  1. People also search for