Question

Explain " Periodic tables of chemical elements- Impact on human welfare" in 600 words.

Answer 1

Answer:

periodic table: -

1.In the periodic table have 7 horizontal rows is known as period.

the 8 vertical columns is known as groups.

2. In a 2 rows shows separately at the bottom of the periodic table .

3. periodic table have 4 blocks that is SPDF block.

4. C,Br,F,I most important element in chemistry.......

Hope so it's your answer..........

plzzzzzzzzzz............

Mark as brainlist..............