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27 Oct 2021

Given information

An element in the third period (row) of the periodic table with three valence electrons is given.

Step-by-step explanation

Step 1.

The period number is always the valence shell of the electronic configuration and the group number indicates the number of valence electrons. Therefore the electronic configuration of an element gives the idea about the group number and period number of the position of element in the periodic table. 

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Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944

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