Transcript Hydrogen

d-block Elements
• Transition Metals
• Most have high
densities and high
melting points.
• Usually strong,
structurally useful
materials.
[http://www.colorado.edu/physics/2000/periodic_table/images/periodicTransMetal.jpg]
Click here for videos on the Transition Metals
d-block Elements
• Many transition
metals are made
into alloys in
order to combine
their properties.
• Metals are melted
then mixed
together.
Steel is an alloy of carbon & iron.
The purity of gold is determined by
the different ratios of gold, copper,
and silver present.
d-block Elements
• Iron
• 4th most
abundant element
in earth’s crust
• Easily rusts, so
can be plated
with Chromium to
prevent this.
Click here for
magnetism demo
[http://www.webelements.com/webelements/elements/media/element-pics/Fe.jpg]
d-block Elements
• “Coinage Metals”
• Copper, Silver,
Gold
• Available pure in
nature but rare…
• (25th, 64th, and
71st respectively)
f-block Elements
• Inner Transition
Metals
• 2 rows set apart
from the periodic
table.
[http://www.bcpl.net/~kdrews/periodic%20chart/chart8.gif]
f-block Elements
• The rows are
named after the
1st element in
each row,
Lanthanum and
Actinium
[http://newark.rutgers.edu/~huskey/images/inner_metals.jpg]
f-block Elements
• Lanthanides widely distributed in
nature but little commercial
importance.
• Actinides are important because of
radioactive properties (only Th & U
are natural)