Chemistry, asked by saifkhan90684, 1 day ago

an atom of an element has four shells it has one electron in the valence shell and the two inner shell have 8 electrons each find the atomic number​

Answers

Answered by shraddha8666
0

Answer:

Valence shell has 1 electron and 2 inner shells have 8 electrons, thus the valence electron is in 'N' shell.

The electronic configuration is 2, 8, 8, 1 and atomic number is 19.

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