The period that involves all blocks of elements is
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Period 2. Period 2 elements involvethe 2s and 2p orbitals. They include the biologically most essentialelements besides hydrogen: carbon, nitrogen, and oxygen.
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period 6 element
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A period 6 element is one of the chemical elements in the sixth row (or period) of the periodic table of the elements, including the lanthanides.
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