periodic table Flashcards
what are the groups of a periodic table ?
columns of elements, 18
what are the periods of the periodic table
horizontal row of elements, 7
what are the metals of the periodic table
left hand side, separated by zigzag line, excludes hydrogen
what are the metalloids of the periodic table
placed on either side of staircase, excludes aluminium (contains both metallic and non metallic properties)
what are the nonmetals of the periodic table
upper right side, separated by staircase of metalloids
where are the noble gases on periodic table
group 18, filled valence shells make them unreactive (inert gases)
where are the transition elements
group 3-12 on the periodic table, serve as bridge between two sides of table
where are alkali metals on table
group 1 elements, very reactive
where are alkaline-earth metals
group 2 elements, less reactive than alkali but still reactive
where are halogens on periodic table
group 17 elements
