Question

explain structure of modern periodic table​

Answer 1

Answer:

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. ... The seven rows of the table, called periods, generally have metals on the left and nonmetals on the right.

Explanation:

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Answer 2

Answer:

it has 7 horizotal rows called perioand 18 vertical columns called group