electronegativity deffinition

symbol χ, is a chemical property that describes the tendency of an atom or a functional group to attract electrons (or electron density) towards itself

ionization energy

ionization energy definition

The ionization energy (IE) of an atom or molecule describes the minimum amount of energy required to remove an electron (to infinity) from the atom or molecule in the gaseous state

atomic radii

atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the surrounding cloud of electrons