Howd2e7ricaboec
Howd2e7ricaboec
23-09-2016
English
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The characteristics of an element
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NathalyN
NathalyN
28-09-2016
Alkali metals.
Alkaline earth metals.
Transition metals.
Post-transition metals.
Metalloid
Lanthanides.
Actinides.
Nonmetals.
Halogens.
Noble gases.
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