Metals, Metalloids and Non-Metals
The periodic table cannot only be divided into families but it can also be
organized into four groupings. As the table illustrates, members of the
groupings share many properties.
Grouping
Metals
Examples
Location
Alkali
metals,
alkaline
With exception of H
earth
and metalloids, all
metals, elements to the LEFT
transition
of staircase.
metals(Sc,
Ti, V etc)
Physical Properties
good conductors of electricity and heat;
shiny, malleable, usually high density and
high melting ,except for alkalis; many
react with acid
Metalloids
With exception of Al,
B, Si, Ge,
elements that border semi-conductors; some shiny; don't react
As, Sb, Te,
the staircase (jagged with acid; not malleable
Po:
line in periodic table)
Nonmetals
With exception of
N, O, S, P,
poor conductors of heat and electricity;
metalloids and noble
Cl, Br, Se
low-melting; react with metals and nongases, elements to the
etc
metals.
right of the staircase.
He, Ne, Ar,
Noble Gases
Kr, xe, Rn
Last column of the
periodic family
All gases at room temperature; poor
conductors of heat and electricity
generally unreactive