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hydride |
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hydrideAny of a class of compounds in which hydrogen is combined with another element. There are three basic types of hydrides: saline, metallic, and covalent. Saline hydrides, such as sodium hydride (NaH) and calcium hydride (CaH2), are often used as portable sources of hydrogen gas (H2). Metallic hydrides, such as titanium hydride (TiH2), are alloylike materials (see alloy) with some properties of metals, such as lustre and electrical conductivity. Covalent hydrides (see covalent bond) are mostly compounds of hydrogen and nonmetallic elements; they include water, ammonia, hydrogen sulfide (H2S), and methane. A fourth group of hydrides, dimeric (polymeric) hydrides, is sometimes recognized (see borane). Dimeric hydrides give off large amounts of energy when burned and may be useful as rocket fuels. hydride any compound of hydrogen with another element, including ionic compounds such as sodium hydride (NaH), covalent compounds such as borane (B2H6), and the transition metal hydrides formed when certain metals, such as palladium, absorb hydrogen hydride [′hī‚drīd] (inorganic chemistry) A compound containing hydrogen and another element; examples are H2S, which is a hydride although it may be properly called hydrogen sulfide, and lithium hydride, LiH. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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