Question

explain how to find number of shells and valency electrons using perodic table????? plz answer my question​

Answer 1

Answer:

periodic table tells us the atomic number that constitutes the number of protons. as the number of protons are equal to number of electrons. hence, indirectly it tells about the electronic configuration.

for number of shells

atomic number will be equally distributed in shells like K, l, M., n, o, p etc. so we will get shells

VALENCE ELECTRONS ARE THE ELECTRONS IN THE LAST SHELL....