| 词汇 | electronegativity |
| 释义 | electronegativity noun[ U ] us/ɪˌlek·troʊˌneɡ·əˈtɪv·ɪ·t̬i/ chemistry the ability of an atom to attract electrons in a chemical bond Examples of electronegativityelectronegativity Chapter 1 starts off with a comprehensive summary of basic chemical principles, such as atomic structure, ionic radii, electronegativity and solubility products. An atom's electronegativity is affected by both its atomic number and the distance between the valence electrons and the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons (or electron density) towards itself. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The oxidizing tendency of peroxides is related to the electronegativity of the substituents. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomic orbital energy correlates with electronegativity as more electronegative atoms hold their electrons more tightly, lowering their energies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Elements in the same group tend to show patterns in atomic radius, ionization energy, and electronegativity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Conversely, bonds to other atoms are very strong because of fluorine's high electronegativity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The trifluomethyl group has a significant electronegativity that is often described as being intermediate between the electronegativities of fluorine and chlorine. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since fluorine is a relatively small atom with a large electronegativity, its covalent radius is difficult to evaluate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Of the elements within d-block, zirconium has the fourth lowest electronegativity after yttrium, lutetium and hafnium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The solute and solvent should have similar electronegativity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Elements with low electronegativity, such as most metals, easily donate electrons and oxidize they are reducing agents. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All group 2 elements are electropositive towards carbon and electronegativity decreases down the row. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Thiopyrylium salts are less reactive than the analogous pyrylium salts due to the lower electronegativity of the sulfur atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Their strong acidity is attributed to the electronegativity of the trifluoromethyl group that stabilizes the negative charge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of electronegativity These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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