... Periodic table Element symbol = Yb Atomic number = 70 Atomic weight = 173.04 ± 3 Abundance in the earth's crust = 3.0 ppm (41st place) Stable nuclide abundance ratio 168 Yb = 0.140%, 170 Yb = 3.03%, 171 Yb = 14.31%, 172 Yb = 21.82%, 173 Yb = 16.13%, 174 Yb = 31.84%, 176 Yb = 12.73% Melting point = 824 ° C Boiling point = 1427 ° C Specific gravity = 6.977 (α-ytterbium), 6.54 (β-ytterbium) Electron configuration = [Xe] 4f 14 5d 0 6s 2 Main oxidation number = II, III One of the lanthanides of the rare earth elements belonging to the IIIA group of the periodic table. In 1794, Johann Gadolin of Finland discovered a new oxide in a mineral from Ytterby near Stockholm, Sweden, which he named ytterbia after the place of origin. Various elements, including yttrium, were found in ytterbia, and in 1878 Jean Charles Galissard de Marignac of Switzerland discovered a new element, which he named ytterbium. [Yttrium]... Periodic table Element symbol = Y Atomic number = 39 Atomic weight = 88.9059 Abundance in the earth's crust = 33 ppm (26th place) Stable nuclide abundance ratio 89 Y = 100% Melting point = 1495 °C Boiling point = 2927 °C Specific gravity = 4.45 Electron configuration = [Kr] 4d 1 5s 2 Main oxidation number = III A rare earth element belonging to group IIIA of the periodic table. In 1794, Johann Gadolin of Finland discovered a new oxide in a mineral from Ytterby near Stockholm, Sweden, and named it ytterbia after the place of origin, but later it came to be called yttria (meaning the oxide of yttrium). In 1843, Carl Gustav Mosander of Sweden succeeded in separating yttrium into its three components (yttria, terbia, and erbia), retaining the old name yttrium for the element derived from one of the elements, yttrium, and giving the names terbium and erbium to the elements derived from terbia and erbia, respectively. [Gadolinium]... Periodic table Element symbol = Gd Atomic number = 64 Atomic weight = 157.25 ± 3 Abundance in the earth's crust = 5.4 ppm (40th place) Stable nuclide abundance ratio 152 Gd = 0.20%, 154 Gd = 2.15%, 155 Gd = 14.7%, 156 Gd = 20.47%, 157 Gd = 15.68%, 158 Gd = 24.9%, 160 Gd = 21.9% Melting point = 1312 ° C Boiling point = about 3000 ° C Specific gravity = 7.948 (α) Electron configuration = [Xe] 4f 7 5d 1 6s 2 Main oxidation number = III One of the lanthanides among the rare earth elements belonging to the IIIA group of the periodic table. In 1880, Jean Charles Galissard de Marignac of Switzerland discovered a new element different from samarium in samarskite, and in 1886 named it gadolinium in honor of Johann Gadolin, a Finnish researcher of rare earth elements. The main ores are xenotime, allanite, and tortovaitite. *Some of the terminology that mentions "Gadolin, J." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…周期表元素記号=Yb 原子番号=70原子量=173.04±3地殻中の存在度=3.0ppm(41位)安定核種存在比 168Yb=0.140%,170Yb=3.03%,171Yb=14.31%,172Yb=21.82%,173Yb=16.13%,174Yb=31.84%,176Yb=12.73%融点=824℃ 沸点=1427℃比重=6.977(α‐イッテルビウム),6.54(β‐イッテルビウム)電子配置=[Xe]4f145d06s2 おもな酸化数=II,III周期表第IIIA族に属する希土類元素のうちのランタノイドの一つ。1794年フィンランドのガドリンJohann Gadolinは,スウェーデンのストックホルム近郊イッテルビーYtterby産の鉱物から新しい酸化物を発見し,産地にちなんでイッテルビアとよんだ。イッテルビアからはイットリウムをはじめ各種の元素が見いだされたが,さらに1878年スイスのマリニャックJean Charles Galissard de Marignacは新元素を発見し,それをイッテルビウムとした。… 【イットリウム】より…周期表元素記号=Y 原子番号=39原子量=88.9059地殻中の存在度=33ppm(26位)安定核種存在比 89Y=100%融点=1495℃ 沸点=2927℃比重=4.45電子配置=[Kr]4d15s2 おもな酸化数=III周期表第IIIA族に属する希土類元素の一つ。1794年フィンランドのガドリンJohann Gadolinは,スウェーデンのストックホルム近郊イッテルビーYtterby産の鉱物から新しい酸化物を発見し,産地にちなんでイッテルビアとよんだが,のちイットリア(イットリウムの酸化物の意)とよぶようになった。1843年スウェーデンのモサンデルCarl Gustav Mosanderはこのイットリアを3成分(イットリア,テルビア,エルビア)に分けることに成功し,その一つであるイットリアから得られた元素に旧名イットリウムを保留し,テルビア,エルビアから得られた2元素にそれぞれテルビウム,エルビウムの名を与えた。… 【ガドリニウム】より…周期表元素記号=Gd 原子番号=64原子量=157.25±3地殻中の存在度=5.4ppm(40位)安定核種存在比 152Gd=0.20%,154Gd=2.15%,155Gd=14.7%,156Gd=20.47%,157Gd=15.68%,158Gd=24.9%,160Gd=21.9%融点=1312℃ 沸点=約3000℃比重=7.948(α)電子配置=[Xe]4f75d16s2 おもな酸化数=III周期表第IIIA族に属する希土類元素のうちのランタノイドの一つ。1880年スイスのマリニャックJean Charles Galissard de Marignacはサマルスキー石からサマリウムとは異なる新元素を発見し,希土類元素の研究者フィンランドのガドリンJohann Gadolinを記念して86年ガドリニウムと命名した。主要鉱石はゼノタイム,褐レン石,トルトバイタイトなど。… ※「ガドリン,J.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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