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The taxonomy 0

The taxonomy and the species

The species The species is a group of more similar living organisms in the shape that can reproduce to give birth of the new fertile individuals which are able to reproduce and keeping the...

Non-metals 0

The chemical properties of the non-metals

Non-metals The non-metals are the elements which have more than four electrons in their outermost energy levels , The non-metals are characterized by the smallest atomic sizes and the largest electronegativity .