Question

$<s> hello$
$<b> Periodic table chemical elements impact on human welfare​$
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Answer 1

Hlw mate

Answer:

The Periodic Table

The Periodic Table of the Chemical Elements is also known as the Periodic Table of the Elements, and as (simply) the Periodic Table. It is a tabular presentation of the chemical elements, as shown below.

The Russian chemist Dmitri Ivanovich Mendeleef (1834 - 1907) devised the modern Periodic Table of the elements in 1869 by arranging the elements known at that time in order of increasing atomic weight, while also leaving gaps for undiscovered elements. More information about the history of the periodic table will be added at a later date.

Answer 2

hey mate..

here is your answer..

refer to the aatachment