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Definition of Periodic law - 4 dictionary results

pe⋅ri⋅od⋅ic law

[peer-ee-od-ik, peer-]
–noun Chemistry.
1. the law that the properties of the elements are periodic functions of their atomic numbers.
2. Also called Mendeleev's law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.

Origin:
1870–75
pe·ri·od·ic law   (pĭr'ē-ŏd'ĭk)
n.   Chemistry
The principle that the properties of the elements recur periodically as their atomic numbers increase.

Main Entry: periodic law
Function: noun
: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomicstructure and of most of their properties called also Mendeleev's law

periodic law n.
The principle that properties of elements recur periodically as atomic numbers increase.

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