Question

observations of modern periodic law​

Answer 1

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The modern periodic table is based on Dmitri Mendeleev's 1896 observations that chemical elements can be grouped according to chemical properties they exhibit. It defines periods and groups and describes how various electron configurations affect the properties of the atom.

Answer 2

Answer:

The modern periodic law states that the physical and chemical properties of the elements are the periodic function of the atomic numbers. The various elements with similar properties repeat after certain regular intervals. This repetition occurs when you arrange the elements in order of their increasing atomic numbers

Explanation:

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