Question

Who prepared modern periodic table?

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Answer 1

Answer:

The modern periodic table is used to organize all the known elements. Elements are arranged in the table by increasing atomic number. In the modern periodic table, each element is represented by its chemical symbol. The number above each symbol is its atomic number. ... Rows of the periodic table are called periods.

This divided into four viz groups s, p, d, f

Sblock contain =1 to 3

P block = 4 to 8

And soo on

Group number: Group name

Group 1 or IA: Alkali metals

Group 2 or IIA: Alkaline earth metals

Group 15 or VA: Nitrogen family

There is f block contain lanthanide and athanide sires and p block is an non metals

Dmitri Mendeleev

Explanation:

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