Download Trends of the Periodic Table File

TRENDS OF THE
PERIODIC TABLE
TRENDS OF THE PERIODIC TABLE
PERIODIC
LAW: The principle
that the properties of the
elements recur periodically as
their atomic numbers increase
TRENDS OF THE PERIODIC TABLE
TRENDS OF THE PERIODIC TABLE
GROUPS
(OR FAMILIES):
Elements with similar properties
are aligned in vertical columns
(18 groups total) (have same #
electrons in outside E shell)
TRENDS OF THE PERIODIC TABLE
TRENDS OF THE PERIODIC TABLE

BEGINS WITH
H #1 group are alkali metals (except H)
Be #2 group are alkaline earth metals
F #17 group are halogens
He #18 group are noble gases
TRENDS OF THE PERIODIC TABLE
METALS:
good conductors of
heat & electricity; have luster or
shine; typically solid at room
temp. (except Hg mercury)
TRENDS OF THE PERIODIC TABLE
NONMETALS:
no luster; poor
conductors; many are gases at
room temp.
TRENDS OF THE PERIODIC TABLE
SEMIMETALS:
(or metalloids)
are in between. Either have both
properties or intermediate
properties

Metalloids are a special type of element that have
properties of both metals and nonmetals. For
example, a metalloid may conduct electricity like
a metal, but also insulate against heat like a
nonmetal. The metalloid groups hosts a diverse
set of elements, such as silicon, boron, arsenic
and antimony, and their diverse properties allow
industries to use them for multiple purposes. As
a result, metalloids have become important for
many industrial applications.
Read more: Uses of Metalloids in Industry |
eHow.com http://www.ehow.com/info_8675759_us
es-metalloids-industry.html#ixzz27d8L5GZV
TRENDS OF THE PERIODIC TABLE
PERIODIC
TRENDS: many
properties of elements change in
predictable ways as you move
through the table
TRENDS OF THE PERIODIC TABLE
ATOMIC
RADIUS: distance
from center of atom to outermost
electron
TRENDS OF THE PERIODIC TABLE
TRENDS OF THE PERIODIC TABLE
1ST
IONIZATION ENERGY:
energy needed to remove the
outermost, Or highest energy
electron from a neutral atom in
gas phase
TRENDS OF THE PERIODIC TABLE