What are the biological roles of Period 2 and Period 3 elements in the human body? I need to make a mind map with this so I will be happy if more points are provided.
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Neon is a trace component of the atmosphere without any biological role. Notes[edit]. ^ Hydrogen is occasionally referred to as an alkali .
A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the chemical elements.
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