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- Periodic table (7298 bytes)
19: ...nline F-block]] inserts the [[Lanthanide]]s and [[Actinide]]s back into the table
84: ...suranium element|transuranic]] lathanides and the actinides, which may be placed within the table, or below ... - Actinium (7046 bytes)
20: | [[Chemical series]] || [[Actinide]]s
110: | <sup>221</sup>[[francium|Fr]]
119: | α || 5.536 || <sup>222</sup>[[francium|Fr]]
125: | α || 5.042 || <sup>223</sup>[[francium|Fr]]
141: ...ho separated it from [[uraninite|pitchblende]]. [[Friedrich Otto Giesel]] independently discovered act... - Chemical series (2075 bytes)
1: ...l and chemical characteristics vary progressively from one end of the series to another.
5: ...ce, the physical properties that group them arise from the same [[atomic orbital]] configurations that...
16: |style="background:#FF99CC;"| [[Actinide]]s ||
49: [[fr:S鲩e chimique]] - Americium (6956 bytes)
20: | [[Chemical series]] || [[actinide]]s
120: ...oactive]] [[metal]]lic element, americium is an [[actinide]] that was obtained by bombarding [[plutonium]] w...
123: ...t slowly tarnishes in dry air. [[Alpha emission]] from Am-241 is approximately three times [[radium]]....
132: ... isotopes of americium range in [[atomic weight]] from 231.046 [[atomic mass unit|amu]] (Am-231) to 24... - Berkelium (5697 bytes)
21: | [[Actinide]]s
78: .... A [[radioactive]] [[metal]]lic element in the [[actinide]] series, berkelium was first synthesized by bomb...
83: [[X-ray diffraction]] techniques have been used to identify var...
85: Like other actinides, berkelium [[bio-accumulate]]s in [[skeleton | s...
88: ...berkelium-243 ([[half-life]] 4.5 hours) and two [[free neutron]]s. One of the longest lived [[isotope]... - Californium (7452 bytes)
17: ... series]] </td><td>[[Actinide]]s</td></tr>
59: ...[supernova]]e remnants. Californium-249 is formed from the [[beta decay]] of [[berkelium]]-249 and mo...
72: ...of californium-245 (half-life 44 minutes) and a [[free neutron]].
75: ...sotopes of californium range in [[atomic weight]] from 237.062 [[atomic mass unit|amu]] (Cf-237) to 25... - Curium (8593 bytes)
20: | [[actinide]]s
176: ...e]] [[metal]]lic [[transuranic element]] of the [[actinide]] series, curium is produced by bombarding [[plut...
186: ...es. Curium-242 ([[half-life]] 163 days) and one [[free neutron]] were made by bombarding [[alpha parti...
189: ...The isotopes of curium range in [[atomic weight]] from 233.051 [[atomic mass unit|amu]] (Cm-233) to 2... - Einsteinium (5780 bytes)
19: | [[Actinide]]s
81: ...emical]] properties typical of a heavy trivalent, actinide element. Einsteinium has 99 protons, 99 electrons...
84: ...National Laboratory]]. Both were examining debris from the first [[nuclear weapon|hydrogen bomb]] test...
86: ...ogram of irradiation and then chemical separation from a starting 1 kg of plutonium isotope.
89: ...sotopes of einsteinium range in [[atomic weight]] from 241.0686620 [[atomic mass unit|amu]] (Es-241) t... - Fermium (6567 bytes)
17: ... series]] </td><td>[[Actinide]]s</td></tr>
48: ...e]] [[metal]]lic [[transuranic]] element of the [[actinide]] series, fermium is made by bombarding [[plutoni...
56: ...wever. In late [[1953]] and early [[1954]] a team from the [[Nobel Institute of Physics]] in [[Stockho...
59: ...he isotopes of fermium range in [[atomic weight]] from 242.073 [[atomic mass unit|amu]] (Fm-242) to 25... - Lawrencium (5210 bytes)
16: ... series]] </td><td>[[Actinide]]s</td></tr>
31: ...[[rare earth]] element, lawrencium is synthesized from [[californium]] and has no known uses.
34: ... has indicated that it behaves similarly to the [[actinide]]s.
36: ...es, but it is still most often grouped with the [[actinide]]s in the periodic table.
41: ...en moved in order to place the collected atoms in front of a series of [[solid-state]] detectors. The ... - Mendelevium (4980 bytes)
20: | [[Actinide]]s
73: ... [[radioactive]] [[transuranic]] element of the [[actinide]]s, mendelevium is synthesized by bombarding [[ei...
76: ...ate]] in addition to the more characteristic (for actinide elements) tripositive (III) oxidation state. Md-2...
82: ...sotopes of mendelevium range in [[atomic weight]] from 245.091 [[atomic mass unit|amu]] (Md-245) to 26... - Neptunium (9972 bytes)
17: ... series]] </td><td>[[Actinide]]s</td></tr>
92: ...irst [[transuranic element]] and belongs to the [[actinide]] series. Its most stable [[isotope]], neptunium-...
108: ... element]] produced synthetically and the first [[actinide series]] transuranium element discovered.
111: ...1200 ?[[Celsius | C]] and is most often extracted from spent [[nuclear fuel rod]]s as a by-product in ...
116: ... isotopes of neptunium range in [[atomic weight]] from 225.0339 [[atomic mass unit|u]] (Np-225) to 244... - Nobelium (6700 bytes)
17: ... series]] </td><td>[[Actinide]]s</td></tr>
47: ...ctive]] metallic [[transuranic element]] in the [[actinide]] series, nobelium is synthesized by bombarding [...
53: Nobelium (named for [[Alfred Nobel]]) was [[discovery of the chemical elemen...
64: ...isotope]]s of nobelium range in [[atomic weight]] from 249.088 [[atomic mass unit|u]] (No-249) to 262.... - Plutonium (24623 bytes)
20: | [[Actinide]]s
176: ...converting several nuclear power plants in the US from [[enriched uranium]] fuel to [[MOX fuel]] as a ...
178: ...re conducted without any kind of informed consent from the subjects of the experiment. The episode is ...
181: .../sup>Pu remain from the birth of the solar system from waste of supernovae, because its half-life (80 ...
188: ...cts). The Pu-239 can then be chemically separated from the rest of the material to give high-purity Pu... - Protactinium (7744 bytes)
150: ...silver [[metal]]lic element that belongs to the [[actinide]] group, with a bright metallic luster that it re...
156: ... Hahn]] and [[Lise Meitner]] of [[Germany]] and [[Frederick Soddy]] and [[John Cranston]] of the [[Uni...
158: ...olate Protactinium for the first time in [[1934]] from 0.1 mg of Pa<sub>2</sub>O<sub>5</sub>, first co...
166: ... million|part]] 231-Pa to 10 million of ore; ores from [[Zaire]] have about 3 ppm. - Uranium (27752 bytes)
19: | [[Actinide]]s
158: ...y|radioactive]] element, uranium belongs to the [[actinide series]] and its isotope [[uranium-235|<sup>235</...
165: *beta (tetragonal) stable from 667.7 °C to 774.8 °C
166: *gamma (body-centered cubic) from 774.8 °C to melting point - this is the mos...
170: ...up>233</sup>U isotope is also fissile and is made from <sup>232</sup>[[thorium]] by [[neutron]] bombar...
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