Effective atomic number, denoted by ''Z''
eff, may refer to:
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Effective nuclear charge In atomic physics, the effective nuclear charge is the actual amount of positive (nuclear) charge experienced by an electron in a multi-electron atom. The term "effective" is used because the shielding effect of negatively charged electrons prevent ...
of an individual atom, as felt by electrons within that atom
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Effective atomic number (compounds and mixtures) The atomic number of a material exhibits a strong and fundamental relationship with the nature of radiation interactions within that medium. There are numerous mathematical descriptions of different interaction processes that are dependent on the at ...
of a composite material
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