How do we rationalize atomic structure in terms of atomic number and electronic structure?

Md Ariful Islam

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Md Ariful Islam

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  1. Protons and neutrons are the sub-atomic particles present in the centre of an atom. The electrons revolve around the nucleus in their energy levels.
  2. The atoms shown in the picture have the same number of electrons in the last shell (valency shell) i.e., 7. Thus they belong to the same group. They have a valency of -1.

The atoms are flourine and chlorine, the halogens. They belong to the seventh group.

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