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The rare earth metals
Transcript of The rare earth metals
The rare earth elements (REE) or rare earth metals are a set of seventeen chemical elements in the periodic table, specifically the fifteen lathanides including scandium and Yttrium.
Scandium and Yttrium are considered rare earth metals, because they tend to occur in the same ore deposits as the lathanides and exhibit similar chemical properties.
The actinides are a series of chemical elements, this elements can be found in the fifteen metallic elements with the atomic number 89 through 103.
Ionization energy is the energy needed to remove one or more electrons from the atom to form a positively charged ion.
Is the tendency of an atom to attract electrons to itself.
Are a series of chemical elements, this elements are found in the fifteen metallic elements with the atomic number 57 through 71.
The rare earth metals
What is ionization energy?
What is electronegativity?
As you go to right the ionization energy increases.
As you go up, the same occurs.
Electronegativity increases as you go from left to right
Atomic Radius is the measurement of an atom's size.
It decreases as you go from down to up
and it also decreases as you go from left to right.
Also increases when you go from down to up
OBJECTS THAT CONTAINS rARE EARTH METALS
Rare earth metals are used in many devices that people use everyday such as computer memory, DVDs, rechargeable batteries, cell phones, catalytic converters, magnets, fluorescent lighting and much more.
Mobile Devices :
Europium, terbium, and yttrium
Energy efficients: europium, terbium, yttrium, and in some cases dysprosium.
Neodymium’s unique magnetic power is put to use in the speakers of mobile devices, because it helps reduce the speaker’s size but allows it to maintain the strength and quality of its sound.
Computer Memory : neodymium magnets, which have the power to enable the high speed rotation yet take up relatively little space.
Ytterbium: can enhance stainless steel and be used to monitor the effects of earthquakes and explosions on the ground.
Thulium used as the radiation device in portable X-rays, making thulium a highly useful material.
Dysprosium:Lasers and commercial lighting can use dysprosium, which may also be used to create hard computer disks and other electronics that require certain magnetic properties.
Scandium:It is used in many popular consumer products, such as televisions and fluorescent or energy-saving lamps.
Lanthanum: is used to make special optical glasses, including infrared absorbing glass, camera and telescope lenses, and can also be used to make steel more malleable.
By Aimee Perez, Deah'je Miles, Sandra Cazares and Nicolle Polo