单词 | monatomic |
例句 | This relationship means that the internal energy of an ideal monatomic gas is constant during an isothermal process—that is, ΔU = 0 . College Physics for AP Courses 2015-08-12T00:00:00Z For example, the pure metalloids form covalent crystals like the nonmetals, but like the metals, they generally do not form monatomic anions. Chemistry 2019-02-14T00:00:00Z Moreover, in a paper published in April, Hemley and his colleagues report signs that hydrogen squeezed up to 360 GPa holds on to its diatomic character and fails to morph into a monatomic metal. Metallic hydrogen: Hard pressed 2012-06-13T17:20:27.127Z Its ratio of specific heats has very nearly the ideal value 1.666, appropriate to a monatomic molecule. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z The same value had previously been found for mercury vapour by Kundt and Warburg, and had been regarded as confirmatory of the monatomic character attributed on chemical grounds to the mercury molecule. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" The molecule of iodine, for example, is monatomic at 1200� C., but becomes diatomic at the ordinary temperature. The Mechanism of Life Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Chemistry 2019-02-14T00:00:00Z The supporters of the formula Hg2Cl2 pointed out that dissociation into mercury and mercuric chloride would give this value, since mercury is a monatomic element. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" In air there is very little deposit from an Al cathode, but it is abundant in tubes filled with the monatomic gases, mercury vapour, argon or helium. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 8 "Conduction, Electric" The abnormal specific heats of the halogen elements may be due to a loosening of the atoms, a preliminary to the dissociation into monatomic molecules which occurs at high temperatures. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" All of them are believed to be monatomic—that is to say, each of their molecules is composed of a single atom. A History of Science, Volume 5(of 5) Aspects Of Recent Science Read the labels of several commercial products and identify monatomic ions of at least six main group elements contained in the products. Chemistry 2019-02-14T00:00:00Z Atomic and Molecular Heats.—The ideal atomic heat is the thermal capacity of a gramme-atom in the ideal state of monatomic gas at constant volume. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" If this should prove to be the case, it will favour the view that chlorine itself is molecular and not monatomic. Fragments of science, V. 1-2 This anomalous condition may be accounted for by the fact that in each case the molecular structure is monatomic, as shown by the values obtained for the ratios of their specific heats. Scientific American Supplement, No. 1082, September 26, 1896 The cadmium molecule, as shown by determinations of the density of its vapour, is monatomic. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" The ions that we have discussed so far are called monatomic ions, that is, they are ions formed from only one atom. Chemistry 2019-02-14T00:00:00Z The oxidation number of a monatomic ion is equal to the ion’s charge. Chemistry 2019-02-14T00:00:00Z |
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