Questions tagged [electronegativity]
Refers to ability for an atom in a covalent framework to attract electron density to itself. Do not conflate with electron affinity, which is the ability of a lone atom (or molecule) to attract an electron to itself. Both are measured in joules/mole.
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Effect of p-character on bond length
As per my understanding, an increase in the p-character of a hybrid orbital increases the bond length whereas an increase in the s-character has the reverse effect. How does this explain the following ...
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In which compound is backbonding more profound?
In both boroxine and borazine, there is back bonding. The former being boron with oxygen and the latter is boron with nitrogen. Where will be more delocalization of electrons? Is it nitrogen due to ...
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Variation of EN of atoms based on interelectronic distance
This is given in pg.46 (Electronegativity) of Concise Inorganic Chemistry by J.D.Lee:
Atoms with nearly filled shells of electrons will tend to have higher
electronegativities than those with ...
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How could ionic compounds form from neutral atoms?
I'm in the process of learning high school chemistry. The concept of ionic compounds was introduced with the example of a neutral sodium atom donating its single valence electron to a neighboring ...
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How important are electrostatic attractions between molecules for bringing molecules together in organic reactions?
There kinetics of a few reactions in organic chemistry do not appear to be affected significantly by the magnitude of charge on the atom.
The most well-known example is $\ce{S}_N2$ reactions with ...
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Percentage ionic character in a compound from electronegativity
So recently I had come across this formula for calculating percentage of ionic character of simple compounds like $HCl$ $NaCl$ etc, by knowing the electronegativity of these elements.
Percentage of ...
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Which is more electronegative? N or Cl? [duplicate]
The electronegativity of $\ce{N}$ is written as 3.04 in the internet and the electronegativity of $\ce{Cl}$ as 3.16. So $\ce{Cl}$ would be more electronegative, right? But if you search for the ...
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Comparing stability of acetate and formate with respect to inductive effect
According to my teacher, the order for +I effect is
$$\ce{-CH2-} > \ce{-NH^-} > \ce{-O^-} > \ce{-COO^-} > \ce{-R} > \ce{-H}.$$
So, $\ce{-COO^-}$ must have more pronounced +I effect ...
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Acidity of toluene compared to propyne
Why is propyne more acidic than toluene? The carbanion formed in case of toluene is easily stabilised by resonance and -I effect of toluene. In case of propyne there is an electron donating ...
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Why can't ethyne form hydrogen bonds in water?
I was recently taught about hydrogen bonding and I learnt that a hydrogen atom attached to fluorine, nitrogen, oxygen or a sp-hybridized carbon (EN = 3.25) can get into a hydrogen bond with another ...
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Will methyl group donates its electron density to only carbon atoms and not to other heteroatoms ?? Why this is so?
I initially thought in every possible case methyl group always donates its electron density to the atom to which it is bonded. But today I came across a problem, in which it asks us to point out the ...
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Average electronegativity difference in ternary compounds
Villars and Hulliger [1, p. 300] define the average electronegativity difference of a ternary compound $\ce{A_xB_yC_z}$ as follows:
$$\bar{\Delta\chi} = 2x(\chi_\ce{A} - \chi_\ce{B}) + 2x(\chi_\ce{A} ...
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Which one has a greater dipole moment: benzamide or benzoic acid?
My guess is that, since the relative electronegativities are similar, therefore the difference would arise only due to magnitudes of difference in electronegativities. And hence the strength should be ...
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How would you explain the general trend in melting point between Group 1 and Group 2 chlorides?
This question is based off of the attached chart. I notice how there's a general increase in melting point down group 2 chlorides and a general decrease (except for Lithium) down the group 1 chlorides....
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How would the regions of this graph showing percentage of ionic character, be classified? [closed]
Looking here at this website - Omnicalculator, at the section of the website for calculating percentage of ionic character. Omnicalculator - Percentage Ionic Character
They let you choose elements and ...
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