group period Do not occur freely in nature 1 Very reactive Do not occur freely in nature Li Na K.

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Presentation transcript:

group period

Do not occur freely in nature 1 Very reactive Do not occur freely in nature Li Na K

Do not occur freely in nature 2 Very reactive Do not occur freely in nature Be Mg Ca

Properties of nonmetals and metals vary Sometimes conductive Properties of nonmetals and metals Si Ge As

Vary in state-- solid (I2) to liquid (Br2) to gaseous (F2and Cl2) 7 Highly reactive Vary in state-- solid (I2) to liquid (Br2) to gaseous (F2and Cl2) F Cl Br

Odorless and colorless 8 Inert (nonreactive) Odorless and colorless He Ne Ar