Question

explain position of elements in modern periodic table ?

Answer 1

The periodic table is a tabular display of the chemical elements organized on the basis of their atomic numbers, electron configurations, and chemical properties. Elements are presented in increasing atomic number. ... In general, within one row (period) theelements are metals on the left, and non-metals on the right.

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Answer 2

as per modern table he made 4 diff blocks
S
p
d
f
noble gases ......

same property element placed in a group..
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