is oh more electronegative than br?
435161
Br- is a better leaving group that OH- for various reasons. OH- is a better Lewis base and has greater nucleophilicity when compared to Br-. Br- being less electronegative than OH- is a valid reason too. Bulky groups are better leaving groups as when they leave, the steric factor gets stabilized.
685923
Here is the difference Between OH and HO: HO is a molecule containing positive Hydrogen Oxygen atoms i.e it is a cation. ... Both are ions, HO+ is Hydroxide, OH- is Oxyhydride. Both are acceptable and the only difference is about the charge on oxygen.
1447588
Hydrogen has an electronegativity of 2.0, while oxygen has an electronegativity of 3.5. The difference in electronegativities is 1.5, which means that water is a polar covalent molecule.
1392311
Both depend on the attraction of electrons - electronegativity deals with attraction of bonded electrons, ionization energy deals with the attraction of an atom's own valence electrons. More protons and a smaller atomic radius will increase both.
1418059
Oxygen is more electronegative than chlorine because of the following reasons : ... Oxygen is placed towards the left side of fluorine so has one electron less than fluorine. Chlorine is below fluorine and has a new shell of valence electrons is added to it.
557002
Sulfur (EN = 2.58) is much less electronegative than oxygen (EN = 3.44). ... Sulfur can expand its valence shell to hold more than eight electrons, but oxygen cannot.
104688
Carbon and Sulfur are actually really close in electronegativity (Carbon 2.55 and Sulfur 2.58), but as someone said earlier, using Fluorine as a reference point is a good strategy because it is the most electronegative element.
923639
Due to +R effect of -OCH3 group which arises due to the lone pair of oxygen atom,it become more electron donating group than -CH3 group where only +Ieffect is present. ... Since oxygen atom of OCH3 has lone pair of electrons so the electron density increases.
1465069
The Pauling scale is the most commonly used. Fluorine (the most electronegative element) is assigned a value of 4.0, and values range down to cesium and francium which are the least electronegative at 0.7.
1197466
With your question, -OCH3 is a larger molecule (more electrons from the methyl donating group) and will more easily donate electrons (think kinetics), but it is also a weaker base than -OH. H isn't electron donating, and the methyl electron donating group increases the strength of the nucleophile.
903438
Yes, in aqueous medium HF is weaker compared to HCl, HNO3 and H2SO4. ... electronegativity and has the greater affinity for hydrogen ion and so does not produce hydrogen ion in aqueous medium...
731978
The pKa of HBrO3 is -2 and of HBr04 is -4.6. This means that both are strong acids, completely ionized in water.
648014
Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.
636686
Oxygen is more electronegative than hydrogen . So O —H bond of HOBr is polar . Hence the whole compound is polar and show acidic character . Which explains molecule polarity the best?
1442159
['K-F would be the most ionic because K has an electronegativity of 0.82 and F has an electronegativity of 3.98.', 'Ca-F would be next. Ca has an electronegativity of 1.00.', 'Br-F. ... ', 'Cl-F. ... ', 'F-F is the most covalent because the electronegativity values are the same so the difference would be zero.']
1461500
No electronegativity difference between two atoms leads to a pure non-polar covalent bond. A small electronegativity difference leads to a polar covalent bond. A large electronegativity difference leads to an ionic bond.
813283
This is why -OCH3 is a better leaving group, but it does not imply anything about the nucleophilicity. ... With your question, -OCH3 is a larger molecule (more electrons from the methyl donating group) and will more easily donate electrons (think kinetics), but it is also a weaker base than -OH.