Definition of periodic law
: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties
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First Known Use of periodic law
1872
Medical Dictionary
periodic law
medical Definition of periodic law
: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties — called also
Mendeleev's law
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