lauerz: (Default)
lauerz ([personal profile] lauerz) wrote2022-11-03 08:26 pm
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Благородные газы

 Мы сегодня все в science department нарядились благородными газами (noble gases), и я выбрала себе газ радон. Rn-222. Пришёл учитель физики и говорит - а какой у тебя half-life? Я говорю, точно не помню, но уверена, что очень короткий. Потом всё-таки решила сходить в википедию проверить. Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colourless, odourless, tasteless noble gas. Radon itself is the immediate decay product of radium. Its most stable isotope, Rn-222, has a half-life of only 3.8 days, making it one of the rarest elements. Фотки будут позже.
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