| 单词 | electronegative |
| 例句 | When we must choose among several Lewis structures with similar distributions of formal charges, the structure with the negative formal charges on the more electronegative atoms is preferable. Chemistry 2019-02-14T00:00:00Z Hydrogen is more electronegative than oxygen, generating a partial negative charge near the hydrogen atom. Biology for AP Courses 2022-06-09T00:00:00Z Some elements, such as oxygen, are very electronegative because they strongly attract electrons from other atoms. Environmental Biology 2018-09-06T00:00:00Z Hydrogen bonds link hydrogen atoms already participating in polar covalent bonds to anions or electronegative regions of other polar molecules. Anatomy and Physiology 2013-06-19T00:00:00Z Described in the article is the development of a low-cost, disposable lab-on-a-chip sensor that detects highly electronegative heavy metals more quickly than current technology generally available in health-care settings. New Sensor Detects Dangerous Heavy Metals in Humans 2011-08-02T13:40:00Z Use these dipoles to predict whether N or H is more electronegative. Chemistry 2019-02-14T00:00:00Z Oxygen is more electronegative than hydrogen, generating a partial positive charge near the oxygen atoms. Biology for AP Courses 2022-06-09T00:00:00Z Lead dioxide, on the other hand, is highly electronegative, preferring to absorb electrons in chemical reactions. Einstein and car batteries: A spark of genius 2011-01-13T10:39:10Z The transport of Cl– and the maintenance of an electronegative environment outside of the cell attract positive ions such as Na+ to the extracellular space. Anatomy and Physiology 2013-06-19T00:00:00Z The end result is the first lab-on-a-chip able to consistently pinpoint levels of highly electronegative manganese in humans. New Sensor Detects Dangerous Heavy Metals in Humans 2011-08-02T13:40:00Z Remember that an element exhibits a positive oxidation state when combined with a more electronegative element and that it exhibits a negative oxidation state when combined with a less electronegative element. Chemistry 2019-02-14T00:00:00Z Hydrogen is more electronegative than oxygen, generating a partial positive charge near the hydrogen atom. Biology for AP Courses 2022-06-09T00:00:00Z If zinc has an affinity for oxygen, it must be because the zinc is either electropositive or electronegative to oxygen. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 Non-metals are electronegative, and with H, or with H and O, form acids. An Introduction to Chemical Science A critical challenge for such sensors is the detection of electronegative metals like manganese. New Sensor Detects Dangerous Heavy Metals in Humans 2011-08-02T13:40:00Z With the exception of nitrogen and carbon, which are poor oxidizing agents, a more electronegative nonmetal oxidizes a less electronegative nonmetal or the anion of the nonmetal: Chemistry 2019-02-14T00:00:00Z Oxygen is more electronegative than hydrogen, generating a partial negative charge near the oxygen atoms. Biology for AP Courses 2022-06-09T00:00:00Z If it has a greater affinity for oxygen than copper has, then the zinc must be either electropositive or electronegative to copper. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 The atom with the δ– designation is the more electronegative of the two. Chemistry 2019-02-14T00:00:00Z Dipole vectors are shown as arrows pointing along the bond from the less electronegative atom toward the more electronegative atom. Chemistry 2019-02-14T00:00:00Z Oxygen compounds with chlorine, bromine, and iodine are oxides because oxygen is the more electronegative element in these compounds. Chemistry 2019-02-14T00:00:00Z Silicon compounds of the general formula SiX4, where X is a highly electronegative group, can act as Lewis acids to form six-coordinate silicon. Chemistry 2019-02-14T00:00:00Z The nonmetal chlorine is more electronegative than any other element except fluorine, oxygen, and nitrogen. Chemistry 2019-02-14T00:00:00Z In general, the less electronegative elements are more likely to be central atoms. Chemistry 2019-02-14T00:00:00Z As the most electronegative element, fluorine also cannot be a central atom. Chemistry 2019-02-14T00:00:00Z On the other hand, fluorine compounds with oxygen are fluorides because fluorine is the more electronegative element. Chemistry 2019-02-14T00:00:00Z We know from our previous discussion that the less electronegative atom typically occupies the central position, but formal charges allow us to understand why this occurs. Chemistry 2019-02-14T00:00:00Z A small plus sign is drawn on the less electronegative end to indicate the partially positive end of the bond. Chemistry 2019-02-14T00:00:00Z Although C and S have very similar electronegativity values, S is slightly more electronegative than C, and so the C-S bond is just slightly polar. Chemistry 2019-02-14T00:00:00Z Because oxygen is more electronegative than sulfur, the oxygen end of the molecule is the negative end. Chemistry 2019-02-14T00:00:00Z Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. Chemistry 2019-02-14T00:00:00Z Although the magnitude of the bond moment will not change based on whether B is the most electronegative or the least, the direction of the bond moment will. Chemistry 2019-02-14T00:00:00Z In the HCl molecule, the more electronegative Cl atom bears the partial negative charge, whereas the less electronegative H atom bears the partial positive charge. Chemistry 2019-02-14T00:00:00Z Elemental sulfur oxidizes less electronegative nonmetals, and more electronegative nonmetals, such as oxygen and the halogens, will oxidize it. Chemistry 2019-02-14T00:00:00Z As sulfur is more electronegative than selenium, H2SO4 is the stronger acid. Chemistry 2019-02-14T00:00:00Z Metals tend to be less electronegative elements, and the group 1 metals have the lowest electronegativities. Chemistry 2019-02-14T00:00:00Z |
| 随便看 |
|
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。