what are the characteristics of rare earth metals?
441140
The rare earths metals are silver, silvery-white or gray metals which have a high luster, but tarnish readily in air. The rare earth metals have high electrical conductivity.
246568
Actinides are typical metals and have properties of both the d-block and the f-block elements, but they are also radioactive. Lanthanides have different chemistry from transition metals because their 4f orbitals are shielded from the atom's environment.
667048
['Lustrous (shiny)', 'Good conductors of heat and electricity.', 'High melting point.', 'High density (heavy for their size)', 'Malleable (can be hammered)', 'Ductile (can be drawn into wires)', 'Usually solid at room temperature (an exception is mercury)', "Opaque as a thin sheet (can't see through metals)"]
15053
Physical Properties of Metals Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).
384627
The rare earth elements are marked with a red outline. Why are all rare earth elements are technically transition elements? Strictly speaking, transition elements are the elements in groups 3 to 12 of the periodic table. The rare earth elements, in their widest sense, are Sc, Y and the lanthanides, La to Lu.
464322
['Conductivity.', 'Corrosion Resistance.', 'Density.', 'Ductility / Malleability.', 'Elasticity / Stiffness.', 'Fracture Toughness.', 'Hardness.', 'Plasticity.']
1101078
Properties of the lanthanides. Like many metals, the lanthanides have a bright silvery appearance. Five of the elements (La, Ce, Pr, Nd, and Eu) are very reactive and when exposed to air react with oxygen to form an oxide coating that tarnishes the surface. For this reason, these metals are stored under mineral oil.
449737
['High reactive metals.', 'Not found freely in nature.', 'Stored in a mineral oil solution.', 'Low melting points.', 'Low densities (lower than other metals)', 'Low electronegativity.', 'Low ionization energy.', 'React easily with halogens.']
462579
Most rare-earth metals have a valence of three; however, that of cerium is 3.2, and europium and ytterbium are divalent.
416778
Lanthanum is a soft, malleable, ductile, silver-white metal. Lanthanum is naturally found in sediments.: it oxidizes rapidly in air and it reacts with water to form the hydroxide.
1107736
Physical properties Ruthenium is a hard, silvery-white metal with a shiny surface. Its melting point is about 2,300 to 2,450°C (4,200 to 4,400°F) and its boiling point is about 3,900 to 4,150°C (7,100 to 7,500°F). Its density is 12.41 grams per cubic centimeter.
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['Good electrical conductors and heat conductors.', 'Malleable - can be beaten into thin sheets.', 'Ductile - can be stretched into wire.', 'Possess metallic luster.', 'Opaque as thin sheet.', 'Solid at room temperature (except Hg).']
638225
It is the least abundant of the rare earths and its metal is easy to work. It slowly tarnishes in air, but is more resistant to oxidation than most rare-earth elements. It also has some corrosion resistance in dry air and good ductility.
153688
['Have high melting points.', 'Have high boiling points.', 'Tend to be soluble in water.', 'Conduct electricity in liquid form and in aqueous solution.', 'Are usually hard and brittle solids.', 'Have high enthalpies of fusion.', 'Have high enthalpies if vaporization.']
50971
['Color : Silver-white.', 'Phase : Solid.', 'Melting point : Melting point of 63°C (145°F) - very low for a metal.', 'Color : Silvery-white metal.', 'Density : Less than water.']
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['density.', 'melting point.', 'thermal conductivity.', 'electrical conductivity (resistivity)', 'thermal expansion.', 'corrosion resistance.']
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Similarities :- Both Lanthanides and Actinides are paramagnetic. Both have high melting and boiling point. Both have common oxidation state .