Question

What is the significance of atomic number in the modern classification of elements? Explain with the help of example.

Answer 1

atomic no. decides the position and properties of that element .see it says tht the modern periodic table relates the periodicity of the properties of the elements to the electronic configuration (or we can say atomic no . ) of the elementfor example- lithiumit has an atomic no. 3 therefore its electronic configuration -2,1therefore valnce electrons - 1so it will be placed in the first group (group 1) i.e. alkali metals

Answer 2

Answer:

hey mate!!!

Explanation:

see the attached file..

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