Question

. Periodicity is due to the similarity in the ___________which gives rise to the periodic properties of the elements. *

a) Outer electronic configurations.

c) Total number of electron and protons.

b) Total no of electrons in the atom.

d) None of the above.
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Answer 1

Answer:

Outer electronic configuration

Explanation:

ʘ‿ʘ(. ❛ ᴗ ❛.)