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The elements are helium, neon,argon,krypton, and xenon

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oxygen group means

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when it is in the field of semiconductor physics

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they have 5 chemically related elements

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this means it is the group 115 and it contains 2 nonmetals and 2 metalloids, 2 metals

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The boron group are the chemical elements in group 13 of the periodic table

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Actinides means that they are 2 rows that are in the bottom of the periodic table

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Lanthanide series is the number 57 it is incuded in the rare-earth metals.

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Alcaline earth metals are they least reactive than the alkali metals

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Transition Metals are the middle of the2 sited of the table

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Alkali metals are the most reactive metals

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Period means that it is a chemicle elements in a horizontal line

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This means that they have the same properties