Question

periodic table explanation​

Answer 1

Answer:

periodic table is classified into 18 columns and 7 rows and each column and row has an elementfirst row has two elements second row has eight elements third third row has eight elements fourth one has 18 and there four subshells s p d f

and each element has one symbol and element name and each as one valency and each column has one name.

I know this much only about periodic table

Explanation:

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Answer 2

Answer:

l don't understood the questiob

Explanation:

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