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Examine elements of the third period and...

Examine elements of the third period and classify them as metals and non-metals.

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First, electronic configuration of these elements is written to find the number of valnece electrons. The elements having 1 - 3 valence electrons are metals while the elements having 4 - 8 valence electrons are non-metal.
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  1. Examine elements of the third period and classify them as metals and n...

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