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An auride is any anion of gold, or a salt containing such an anion.
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∙ 8y ago
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What is the formula for gold 1 oxide?
It is Au2O1, a rarely-seen -1 oxidation state for gold, as in compounds such as cesium auride (CsAu).
Do metallic atoms become negative or positive in ionic bonds?
Almost always yes. There are some weird ionic compounds you can make from group 1 or group 2 metals where another metal accepts the electron. An example is cesium auride, melt cesium and gold together and you get not an alloy but a clear melt , a salt which contains Cs+ and Au- ions. There a few of these chemical weirdies. These an old saying that every rule in inorganic chemistry has an excepotiuon and this is one of them.
Are ionic compounds made of two medals?
No, they don't. I'll explain about ionic bonds... Well, an ionic bond is always going to be a metal bonded to a non-metal. As both a metal and a non-metal have different electronegativities, as they're both on different sides of the periodic table. The element that has the higher electronegativity is the element which takes an electron from the element with less electronegativity. As the non-metal takes an electron from the metal, the metal becomes positively charged, and the non-metal becomes negatively charged. Then as opposite charges attract, they bond together, forming a polar ionic compound. Make sense?
What are chemical properties of gold?
Gold is called a noble metal because it resists reacting with stuff. But it can be "convinced" to react, and it forms numerous compounds. It's oxidation states range from -1 to +5, with +1 and +3, Au(I) and Au(III), far and away the most common. Gold will dissolve in Mercury, but creates an amalgam rather than react with it to create a compound. Aurum (gold) resists most acids, though aqua regia (a 3:1 mix of concentrated hydrochloric and nitric acids) will attack gold, as will cyanide. In the unusual -1 state, gold will form compounds like CsAu (cesium auride). It will hook up with the most reactive of the Group 1 and Group 2 elements, the Alkali and Alkaline Earth elements. Remember that the activity of these elements increases as you go down the column. That's just the opposite of the Group 17 elements, the halogens (fluorine, chlorine, etc.), whose reactivity increases as you go up the column. Speaking of the halogens, the Group 17 elements, will react with gold (Au), and auric fluoride (gold fluoride, AuFl) and auric chloride (gold chloride, AuCl) would be examples. Gold will form compounds in its +1 oxidation state with other ions, and it will also similarily form a number of compounds in the +3 oxidation state. There are also compounds (cluster compounds) where gold will form a compound that includes both the +1 and +3 oxidation states of the metal. It has "dual" (fractional) oxidation states in a single compound. Links are provided for more information.
What are the chemical properties of gold?
Gold is called a noble metal because it resists reacting with stuff. But it can be "convinced" to react, and it forms numerous compounds. It's oxidation states range from -1 to +5, with +1 and +3, Au(I) and Au(III), far and away the most common. Gold will dissolve in Mercury, but creates an amalgam rather than react with it to create a compound. Aurum (gold) resists most acids, though aqua regia (a 3:1 mix of concentrated hydrochloric and nitric acids) will attack gold, as will cyanide. In the unusual -1 state, gold will form compounds like CsAu (cesium auride). It will hook up with the most reactive of the Group 1 and Group 2 elements, the Alkali and Alkaline Earth elements. Remember that the activity of these elements increases as you go down the column. That's just the opposite of the Group 17 elements, the halogens (fluorine, chlorine, etc.), whose reactivity increases as you go up the column. Speaking of the halogens, the Group 17 elements, will react with gold (Au), and auric fluoride (gold fluoride, AuFl) and auric chloride (gold chloride, AuCl) would be examples. Gold will form compounds in its +1 oxidation state with other ions, and it will also similarily form a number of compounds in the +3 oxidation state. There are also compounds (cluster compounds) where gold will form a compound that includes both the +1 and +3 oxidation states of the metal. It has "dual" (fractional) oxidation states in a single compound. Links are provided for more information.
