Electronegativity

https://www.youtube.com/watch?v=Oog0E8cCWqg

Whats electronegativity

The ability of an atom to attract the pair of electrons in a covalent bond.

How does electronegativity increase and decrease in periodic table

Electronegativity increases as we approach top right of the period table,

Most electronegatve elements are fluorine oxygen nitrogen and chlorine

What factors does electronegativity depend on

The size of positive charge on the nucleus, moving left to right on a period the number of protons in nucleus increases. Increased pos charge increases attraction between nucleus and pair of electrons in covalent bond

Atomic radius, the smaller the atomic radius , the closer the bonding electrons will be to the nucleus of an atom. As we move left to right across period , atomic radius decreases

Shielding of nucleus by electrons in inner shells, electrons in the inner shells screen electrons in the outer shell from the positive charge of the nucleus, greater the number of inner shells, the lower the electronegativity

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