what is electro negativity..
not spam..
Answers
What is Electronegativity?
The tendency of an atom in a molecule to attract the shared pair of electrons towards itself is known as electronegativity.
It is a dimensionless property because it is only a tendency. It basically indicates the net result of the tendencies of atoms in different elements to attract the bond-forming electron pairs. We measure electronegativity on several scales. The most commonly used scale was designed by Linus Pauling. According to this scale, fluorine is the most electronegative element with a value of 4.0 and cesium is the least electronegative element with a value of 0.7.
Impact of Electronegativity on Covalent Bonding
The strength of a covalent bond is highly dependent on the electronegativities of the two bonded atoms (especially the difference in the electronegativities of the bonded atoms). Homonuclear diatomic molecules feature relatively ‘pure’ covalent bonds since the electronegativities of the bonded atoms are the same (resulting in the bonded pair of electrons being almost equidistant from the two bonded nuclei). Examples of such covalent bonds can be seen in H2 molecules, Cl2 molecules, and O2 molecules.
On the other hand, the covalent bonds between two species of varying electronegativities tend to become polarized. This occurs because the more electronegative atom pulls the bond pair of electrons closer to itself, developing a partially negative charge in the process (which is usually denoted by the symbol -). At the same time, the more electropositive atom develops a partial positive charge (denoted by +). These partial charges are responsible for the polarity of the chemical bond.
Explanation:
the tendency of an atom molecules to attract the shared pair of electron towards itself is called as Electronegativity