字幕表 動画を再生する 英語字幕をプリント - So Livermorium was first made in around 2000. It was made in calcium-48 plus curium-248 reaction. We've since made 4 different isotopes of Livermorium. They all have tens of milliseconds half-lives, so they're pretty short-lived. So unfortunately I can't show you a bottle. It was a very interesting process to name these elements when we got permission to name 114 and 116-were naming two elements at once. We of course began discussions with our Russian colleagues and reached a concensus on these names, Flerovium for 114 and Livermorium for 116. We chose Livermorium because we could not discover enough elements to name one after everybody who was important in these kinds of experiments. There was many, many scientists here at Livermore. Some have retired, even passed away, who were involved in heavy element research. So we couldn't discover enough elements and name after every single person. So we chose Livermorium to honor all those people, honor the institution here and the city of Livermore. We thought this was an appropriate way to kind of recognize all of those scientists involved in that work. - You spent some time in the community. I know you talk with scholars, you know people. How has that decision been received by the institution and the people of Livermore? They must... - It's been outstanding. The mayor of Livermore is a water chemist, so he understands chemistry. He was ecstatic that this came about. He understood the significance of a new element and that particular name on the periodic table. He's been very supportive. We have a Livermorium day now, which is in late May. They've also named a part of a park, a Plaza in downtown Livermore: Livermorium Plaza. They've been supportive, very ecstatic about it, and understand... I think this community here, because this lab is here, people are a little more scientifically understanding or scientifically literate, So they understand the significance of it. So it's been nothing but supportive for that element. So one of the predicted properties, because it's in group 16, It's in the column in the periodic table where many of the hydrogen compounds of that group are very smelly. So think about hydrogen sulfide - the rotten eggs smell. Hydrogen selenide. - Oh, Selenium... - Yes. Selenium is notorious for being very smelly. Rotten garlic or something like that, It's described at. Telluride. The telluride, tellurium, is also very smelly. So if you think about going down that column in the periodic table, you might say that Livermorium is maybe the smelliest element on the periodic table. It would be very difficult to verify, because we haven't made the hydrogen compound of it. The isotopes, as I mentioned, are 10 milliseconds long, so it's very difficult. And, in addition, you probably wouldn't want to smell it, because it's radioactive and you wouldn't want to actually put your nose on it and smell it. Hydrogen sulfide won't hurt you... it'll hurt in strong-enough concentrations, but everyone smelled rotten eggs before. You wouldn't want to do that with Livermorium. (Audio from "More from Superheavy Videos") So, let's keep going and see where the experiment is So, as we go along here, the ions are going faster and faster and faster... ...all the time inside the tube here you see such a target wheel (...) which is mounted on the axis of this motor here its ends like this
B1 中級 最も溶けやすい元素 - Livermorium - 動画の周期律表 (The Smelliest Element - Livermorium - Periodic Table of Videos) 3 0 林宜悉 に公開 2021 年 01 月 14 日 シェア シェア 保存 報告 動画の中の単語