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  2. Lithium peroxide - Wikipedia

    en.wikipedia.org/wiki/Lithium_peroxide

    Lithium peroxide is the inorganic compound with the formula Li 2 O 2. Lithium peroxide is a white solid, and unlike most other alkali metal peroxides, it is nonhygroscopic . Because of its high oxygen:mass and oxygen:volume ratios, the solid has been used to remove CO 2 from and release O 2 to the atmosphere in spacecraft .

  3. List of CAS numbers by chemical compound - Wikipedia

    en.wikipedia.org/wiki/List_of_CAS_numbers_by...

    lithium peroxide: 12031–80–0 Li 2 S: lithium sulfide: 12136–58–2 Li 2 SO 4: lithium sulfate: 10377–48–7 Li 2 Se: lithium selenide: 12136–60–6 Li 2 SiO 3: lithium metasilicate: 10102–24–6 Li 2 Te: lithium telluride: 12136–59–3 Li 2 TiO 3: lithium titanate: 12031–82–2 Li 2 ZrO 3: lithium zirconate: 51222–70–9 Li 3 ...

  4. Periodic table - Wikipedia

    en.wikipedia.org/wiki/Periodic_table

    The periodic table, also known as the periodic table of the elements, ... Hydrogen is the element with atomic number 1; helium, atomic number 2; lithium, ...

  5. Lithium oxide - Wikipedia

    en.wikipedia.org/wiki/Lithium_oxide

    Burning lithium metal produces lithium oxide. Lithium oxide forms along with small amounts of lithium peroxide when lithium metal is burned in the air and combines with oxygen at temperatures above 100 °C: [3] 4Li + O 2 → 2 Li 2 O. Pure Li 2 O can be produced by the thermal decomposition of lithium peroxide, Li 2 O 2, at 450 °C [3] [2] 2 Li ...

  6. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

  7. Metal peroxide - Wikipedia

    en.wikipedia.org/wiki/Metal_peroxide

    Barium peroxide was once used to produce pure oxygen from air. This process relies on the temperature-dependent chemical equilibrium between barium oxide and peroxide: the reaction of barium oxide with air at 500 °C results in barium peroxide, which upon heating to above 700 °C decomposes back to barium oxide with release pure oxygen. [3]

  8. Alkali metal - Wikipedia

    en.wikipedia.org/wiki/Alkali_metal

    Due to having the lowest atomic weight and the largest atomic radius of all the elements in their periods, the alkali metals are the least dense metals in the periodic table. [71] Lithium, sodium, and potassium are the only three metals in the periodic table that are less dense than water: [5] in fact, lithium is the least dense known solid at ...

  9. Water-reactive substances - Wikipedia

    en.wikipedia.org/wiki/Water-reactive_substances

    The alkaline earth metals (Be, Mg, Ca, Sr, Ba, and Ra) are the second most reactive metals in the periodic table, and, like the Group 1 metals, have increasing reactivity with increasing numbers of energy levels. Beryllium (Be) is the only alkaline earth metal that does not react with water or steam, even if the metal is heated red hot. [9]