Question

lows of periodic classification of elements​

Answer 1

Answer:

All existing matter in our surroundings is made up of basic units known as elements. Initially, in 1800, only 31 chemical elements were discovered. After some advancement in technology in 1865, about 63 more elements were discovered. This created the need for the periodic classification of elements.

Presently, there are 118 elements known to us. Out of these 118 chemical elements, some elements are man-made.

Answer 2

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Mendeleev's Periodic Law: It states that “the properties of elements are the periodic functions of their atomic masses.” It means the properties of the elements depend on their atomic masses and the elements are given a position in the periodic table on the basis of their increasing atomic masses.