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- Dysprosium (8843 bytes)
160: Dysprosium is a [[rare earth]] element that has a metallic, bright silver luster, relatively stable in a...
166: ...l after the development of [[ion exchange]] and [[metallographic reduction]] techniques in the [[1950s]]...
193: ...e less than 30 seconds. This element also has 5 [[meta state]]s, with the most stable being 165m-Dy (t<s... - Einsteinium (5780 bytes)
25: | unknown; probably metallic,<br /> silvery white or gray
81: ...t has the symbol Es and [[atomic number]] 99. A [[metal]]lic highly [[radioactive]] [[transuranic elemen...
89: ...e less than 30 minutes. This element also has 3 [[meta state]]s, with the most stable being Es-254m (t<s... - Erbium (9509 bytes)
182: ...'''Er''' and [[atomic number]] 68. A rare silvery metallic [[lanthanide]] [[rare earth]] element, erbium...
185: ... but is thought by some to be able to stimulate [[metabolism]].
188: ... and because of its resilience it is useful as an metallurgical additive. Other uses:
195: ...s Urbain]] and [[Charles James]]. Reasonably pure metal wasn't produced until [[1934]] when workers redu...
198: ... from the minerals [[xenotime]] and [[euxenite]]. Metallic erbium in dust form presents a fire and explo... - Europium (8579 bytes)
154: There are no commercial applications for europium metal, although it has been used to dope some types of...
159: Pure europium metal was not isolated until recent years.
192: ...less than 12.2 seconds. This element also has 8 [[meta state]]s, with the most stable being 150m-Eu (t<s...
197: ... highly toxic compared to other heavy metals. The metal dust presents a fire and explosion hazard. Europ... - Fermium (6567 bytes)
21: ... </td><td>unknown; probably metallic,<br> silvery white or gray</td></tr>
48: ...[[atomic number]] 100. A highly [[radioactive]] [[metal]]lic [[transuranic]] element of the [[actinide]]...
59: ...re less than 3 minutes. This element also has 1 [[meta state]], Fm-250m (t<sub>?</sub> 1.8 seconds). The... - Gadolinium (9860 bytes)
159: ...malleable and ductile [[rare earth]] metal with a metallic luster. It crystallizes in [[hexagon]]al, clo...
165: ...r [[period 4 element|fourth period]] [[transition metal]]s.
170: Gadolinium also possesses unusual [[metallurgy|metallurgic]] properties, with as little as 1% of gado...
180: ...n biological role, but is said to stimulate the [[metabolism]].
183: ...r by the reduction of its anhydrous fluoride with metallic [[Calcium]]. - Lanthanum (10184 bytes)
102: ...f the most reactive of the rare-earth metals. The metal reacts directly with elemental [[carbon]], [[nit...
113: ... to [[molybdenum]] decreases the hardness of this metal and its sensitivity to temperature variations. ...
114: * [[Mischmetal]], a [[pyrophoric]] alloy used e.g. in lighter f...
137: ...are less than 1 minute. This element also has 3 [[meta state]]s. - Lutetium (10459 bytes)
151: ...l atoms would describe lutetium as a [[transition metal]], but it is commonly considered a [[lanthanide]...
154: ...silvery white [[corrosion]]-resistant trivalent [[metal]] that is relatively stable in [[air]] and is th...
166: ...onsequently, it is also one of the most expensive metals, costing about six times as much per gram as [[...
168: ...by either an [[alkali metal]] or [[alkaline earth metal]]).
171: ...s than a half an hour. This element also has 18 [[meta state]]s, with the most stable being Lu-177m (t<s... - Manganese (14965 bytes)
16: ... </td><td>[[transition metal]]s</td></tr>
22: ... </td><td align="center">silvery metallic <br>[[Image:Mn,25.jpg|125px|]]</td></tr>
106: ...e with difficulty, but easily oxidized. Manganese metal is ferromagnetic only after special treatment.
146: ...are less than 1 minute. This element also has 3 [[meta state]]s. - Mendelevium (4980 bytes)
73: ... (formerly Mv) and the [[atomic number]] 101. A [[metal]]lic [[radioactive]] [[transuranic]] element of...
82: ...re less than 5 minutes. This element also has 1 [[meta state]], 258m-Md (t<sub>?</sub> 57 minutes). The ... - Neodymium (12345 bytes)
106: ... forming an oxide that spalls off and exposes the metal to further oxidation.
125: ...th metals. Neodymium can also be found in [[Misch metal]]; it is difficult to separate it from other rar...
155: ...e less than 71 seconds. This element also has 4 [[meta state]]s with the most stable being <sup>139</sup...
160: Neodymium metal dust is a combustion and explosion hazard.
162: Neodymium compounds, like all rare earth metals, are of low to moderate toxicity; however its t... - Neptunium (9972 bytes)
23: ...ce]] </td><td>Silvery metallic</td></tr>
92: ...] 93. A silvery [[radioactivity | radioactive]] metallic element, neptunium is the first [[transurani...
95: Silvery in appearance, neptunium [[metal]] is fairly chemically [[chemical reaction | rea...
114: ...e less than 50 minutes. This element also has 4 [[meta state]]s, with the most stable being Np-236m (t<s... - Nickel (13955 bytes)
19: |[[transition metal]]s
28: |align="center"|lustrous, metallic<br>[[Image:Ni,28.jpg|125px|]]
166: '''Nickel''' is a metallic [[chemical element]] in the [[periodic table]...
169: Nickel is silvery white [[metal]] that takes on a high polish. It belongs to the...
184: *[[Mu-metal]] has an especially high [[Permeability (electro... - Niobium (10560 bytes)
20: | [[Transition metal]]s
29: | align="center" | grey metallic<br>[[Image:Nb,41.jpg|125px|]]
164: ...er]] 41. A rare, soft, gray, ductile [[transition metal]], niobium is found in [[niobite]] and used in a...
167: Niobium is a shiny grey, ductile [[metal]] that takes on a [[blue|bluish]] tinge when exp...
169: ...um must be placed in a protective atmosphere. The metal begins to [[oxidation|oxidize]] in air at 200 ? ... - Nobelium (6700 bytes)
47: ...mic number]] 102. A [[radioactivity|radioactive]] metallic [[transuranic element]] in the [[actinide]] s...
62: ... less than 2.4 seconds. This element also has 1 [[meta state]], No-254m (t<sub>?</sub> 0.28 seconds). - Plutonium (24623 bytes)
29: | align="center" | silvery white metal<br>
150: '''Plutonium''' is a [[radioactive]], [[metal]]lic, [[chemical element]]. It has the symbol Pu...
154: Peculiarly, the metal goes through phases of contraction as its temper...
188: ...e rest of the material to give high-purity Pu-239 metal.
208: ...s than 7,000 years. This element also has eight [[meta state]]s, though none are very stable (all have h... - Praseodymium (9138 bytes)
149: ...l|spalls]] off when exposed to air, exposing more metal to [[oxidation]]. For this reason, praseodymium ...
154: ... agent with [[magnesium]] to create high-strength metals that are used in [[aircraft engine]]s.
165: ...s. Praseodymium also makes up about 5% of [[Misch metal]].
198: ...e less than 33 seconds. This element also has 6 [[meta state]]s with the most stable being 138m-Pr (t<su... - Promethium (9561 bytes)
28: | metallic
151: ...ropic]] forms, but little else is known about the metal. Promethium salts luminesce in the dark with a p...
186: ... less than 27 seconds. This element also has 11 [[meta state]]s with the most stable being <sup>148</sup... - Protactinium (7744 bytes)
19: | [[Transition metal]]s
28: | bright, silvery metallic luster
150: ... belongs to the [[actinide]] group, with a bright metallic luster that it retains for some time in the a...
160: ...r many years to come, and it is reported that the metal was sold to laboratories for a cost of 2,800 USD...
190: ... less than 1.8 seconds. This element also has 2 [[meta state]]s, 217m-Pa (t<sub>?</sub> 1.15 millisecond... - Rhenium (8807 bytes)
20: <td>[[Chemical series]]</td><td>[[transition metal]]s</td></tr>
90: <td>[[meta state|Meta]]</td><td>[[synthetic radioisotope|{syn.}]]</td><...
100: ... discovered and belongs to the ten most expensive metals on Earth.
103: Rhenium is a silvery white metal, lustrous, and has the highest melting point of ...
105: ...t of the density of the metal. When annealed this metal is very ductile and can be bent, coiled, or roll...
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