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electronegative    
a. 阴电的,带阴电的,阴性的

阴电的,带阴电的,阴性的

electronegative
adj 1: having a negative charge; "electrons are negative" [synonym:
{negative}, {electronegative}, {negatively charged}]

Electro-negative \E*lec`tro-neg"a*tive\, n. (Chem. & Physics)
A body which passes to the positive pole in electrolysis; an
anion.
[1913 Webster]


Electro-negative \E*lec`tro-neg"a*tive\, Electronegative
\E*lec`tro*neg"a*tive\, a. (Chem. & Physics)
1. Having the property of being attracted by an
electro-positive body, or a tendency to pass to the
positive pole in electrolysis, by the law that opposite
electricities attract each other. Contrasted with
{neutral} and {electropositive}
[1913 Webster]

2. Negative; nonmetallic; acidic; -- opposed to {positive},
{metallic}, or {basic}.
[1913 Webster]

3. (Physics) carrying a negative electrical charge.
[PJC]

4. (Chem. and Physics) having a tendency to take up electrons
and form negative ions; having a relatively positive
electrode potential.
[WordNet 1.5 PJC]


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  • Oxidation States
    Chapter 18 Oxidation-Reduction Reactions and Electrochemistry Overview Metal Nonmetal oxidation reduction reactions Assign oxidation states What are oxidation and reduction Identify oxidizing and reducing agents Oxidation-Reduction Examples Forest fire Rusting steel Internal combustion engine Food metabolism Most reactions that provide energy batteries Metal-Nonmetal Oxidation-Reduction
  • CHAPTER 7
    For two atoms in the same periodic group, the less electronegative element goes in the center Writing Lewis Formulas: The Octet Rule Write Lewis dot and dash formulas for hydrogen cyanide, HCN
  • PowerPoint Presentation
    An electronegative element attracts electrons An electropositive element releases electrons Electronegativity increases from left to right in the periodic table Electronegativity decreases going down a group Generalization The greater the difference in electronegativity between two bonded atoms; the more polar the bond
  • Electronegativity
    Electronegativity values for some common elements Values given here are measured on the Pauling scale In a covalent bond between two different elements, the electron density is not shared equally This is because different elements have differing abilities to attract the bonding electron pair This ability is called an element’s electronegativity What is electronegativity? The
  • Atomic Trends Notes - Weebly
    Electronegativity (cont ) Linus Pauling assigned a value of 4 0 to the most electronegative element fluorine and all other elements were measured relative to F Electronegativity (cont ) Why is Fluorine the most electronegative element? Which should be the least electronegative? Electronegativity (cont ) How does electronegativity effect molecules?
  • Chapter 7: Chemical Formulas and Chemical compounds
    H = +1 Oxygen is the most electronegative atom fixed value O = -2 Total oxidation number of the three oxygen atoms is -6 So the oxidation number of carbon and -6 need to equal -2
  • Hydrogen bonding - Virtual University of Pakistan
    Since the hydrogen donor is strongly electronegative, it pulls the covalently bonded electron pair closer to its nucleus, and away from the hydrogen atom The hydrogen atom is then left with a partial positive charge, creating a dipole-dipole attraction between the hydrogen atom bonded to the donor, and the lone electron pair on the acceptor
  • NMR Spectroscopy
    The peak for the methyl group is further downfield than in the previous examples because of the influence of the nearby electronegative carbonyl group, which pulls the resonance relatively downfield Looking at the structure of acetaldehyde, what would you expect the splitting pattern to be for each of the two carbon atoms?
  • FormalCharge - ScienceGeek. net
    Ions = ionic charge Which is the preferred Lewis Structure? Formal charges closest to zero Negative formal charges on the most electronegative atoms Example #1 – Formaldehyde, CH2O Hydrogens No unshared electrons
  • Modern Chemistry Chapter 7 Chemical Formulas Chemical Compounds
    The more electronegative (second) element in a binary molecular compound is assigned the number equal to the negative charge it would have if it were an anion Fluorine always has an oxidation number of -1 because it is the most electronegative element Oxygen has an oxidation number of -2 in almost all compounds





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