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Mekhanik [1.2K]
4 years ago
15

How does the modern law of periods differ from mandeleevs law of periods?

History
1 answer:
34kurt4 years ago
6 0

Mendeleev arranged the elements according to increasing atomic mass. The modern periodic law says that the properties of the elements repeat periodically when the elements are arranged according to a certain trend. ... An incomplete set of atomic mass, density, and melting point data is given for three elements in a triad.

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