Sodium superoxide: NaO 2. 8H2O. SODIUM SUPEROXIDE violently decomposes above 250°C, evolving oxygen [Mellor 2 Supp. It is an intermediate in the oxidation of sodium by oxygen. This yellow-orange solid is a salt of the superoxide anion. When exposed to heat for a longer duration it undergoes vigorous decomposition. Synonym: Sodium superoxide Empirical Formula (Hill Notation): Na 2 O 2. By contrast, no superoxides have been isolated in pure form in the case of lithium or the alkaline-earth metals, although… Required fields are marked *. Mixtures with combustible materials (most organic compounds) are readily ignited by … Your email address will not be published. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Disodium pentasulphide: Na 2 S 5. Disodium sulphide pentahydrate: Na 2 … Also, you can download notes on Solozone for free. 12K views View 14 Upvoters Disodium hexasulphide: Na 2 S 6. Black Friday Sale! The alkaline earth metals…, In the superoxide ion, O2−, the oxygen has an oxidation number of −1/2. https://www.britannica.com/science/superoxide. The octahydrate is generated by the treatment of sodium hydroxide and hydrogen peroxide together. The molecular or chemical formula of Sodium peroxide is Na 2 O 2. When it is mixed with any combustible material it readily ignites by heat, contact with moisture, or by friction. Your email address will not be published. Reacts with water, acids, mono and dioxide of carbon. (M represents a metal atom.) A superoxide, also known as hyperoxide,is a compound that contains the superoxide anion with the chemical formula O2−. In contrast to oxide ions, the oxygen atoms in the peroxide ion have an oxidation state of −1. Reacts with carbon dioxide to give sodium carbonate and oxygen. Properties of sodium superoxide NaO2: The orange-yellow, when heated decomposes without melting. By contrast, no superoxides have been isolated in pure form in the case of lithium or the alkaline-earth metals, although…, …covalent single bonds, and (3) superoxides, containing superoxide ions, O2−, which also have oxygen-oxygen covalent bonds but with one fewer negative charge than peroxide ions. Sodium peroxide formula, also known as Disodium dioxide formula or Solozone formula is discussed in this article. To learn more about Sodium peroxide formula from the expert faculties at BYJU’S, register now! Alkali metals (which have a +1 oxidation state) form oxides, M2O, peroxides, M2O2, and superoxides, MO2. Disodium tetrasulphide: Na 2 S 4. An oxidizing agent. When exposed to heat for a longer duration it undergoes vigorous decomposition. The stability of metal superoxides depends on the size and the electropositive character of the metal. Molecular Weight: 77.98. Disodium dioxide is a granular solid which is yellow-white to yellow in colour. 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When it is mixed with any combustible material it readily ignites by heat, contact with moisture, or by friction. Sodium superoxide (NaO2) can be prepared with high oxygen pressures, whereas the superoxides of rubidium, potassium, and cesium can be prepared directly by combustion in air. Disodium sulphide: Na 2 S. Disodium persulphide: Na 2 S 2. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. The octahydrate, which is simple to prepare, is white, in contrast to the anhydrous material. Sodium superoxide is the inorganic compound with the formula NaO2. The larger the metal and the more electropositive it is, the greater the stability of….

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