Study notes on "MODERN PERIODIC TABLE"

MODERN PERIODIC TABLE


ELECTRONEGATIVITY


The relative tendency of an atom to attract the shared pair of electrons towards itself is called electronegativity.

In a period from left to right, the value of electronegativity increases while in a group from top to bottom the value of electronegativity decreases.


IONIZATION ENERGY

The ionization energy (IE) is the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.

In a period from left to right, the value of ionization energy increases while in a group from top to bottom the value of ionization energy decreases.

ELECTRON AFFINITY

The electron affinity of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.


In a period from left to right, the value of electron affinity increases while in a group from top to bottom the value of electron affinity decreases.

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