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PinkKiwi214

What are the ways to tell how chemically reactive an element/atom is depending on Lewis notation and the periodic table?

FauconOmicron4707

Hello,

Thanks for your question!

You need to understand that all atoms seek to fill their last electron shell to be stable, and thus achieve the electron configuration of the nearest noble gas. Therefore, the most reactive atoms are those that can reach this stable configuration most easily.

Lewis notation gives us information about the number of valence electrons of atoms, while the periodic table shows the relationships between atoms and their nearest noble gas. The period and group also influence the electronegativity of atoms and their atomic radius, thereby affecting their reactivity.

Here are two explanatory sheets that might be useful to you :

https://www.alloprof.qc.ca/en/students/vl/sciences/lewis-notation-s1128

https://www.alloprof.qc.ca/en/students/vl/sciences/periodicity-of-properties-s1583

I hope this helps you. Don’t hesitate to ask if you have any other questions!