According to the Periodic Table of Radioactivity, at this time the most radioactive element known to man is element number 118,Oganesson. The decay rates for the latest man-made elements are so fast that it's hard to quantify how quickly they break apart, but element 118 has theheaviestknow...
Which of the following is a radioactive element : View Solution Which of the following statements about radioactivity are correct? View Solution Which of the following statements about radioactivity is are true? View Solution Which of the following statement is correct for s-block elements: ...
Radioactivity is the property of a body, especially an element, that is emitting electromagnetic waves. In the unstable nuclei of a radioactive element, the nuclei are so large that it begins to emit either alpha, beta, or gamma radiation....
结果1 题目 The number of parent nuclei in a sample of a radioactive element is N at time r.The radioactive element has a half-life2The rate of decay is proportional to A A N Bt○C1/x D:3○ 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
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Radioactive decay is a random process, meaning that it is physically impossible to predict whether or not a given atomic nucleus will decay and emit radiation at any given moment. Instead, it is quantified by half-life, which is the period of time it takes for half of a given sample of...
Half life of a radioactive element is 10 days. What percentage of the element will remain undecayed after 100 days? View Solution The half-life period of a radioactive element is 140 day. After 560 days, 1 g of the element will reduce to ...
(sometimes, quite different) from the half-life of the corresponding neutral atom. For example, the half-life of187Re in a neutral atom is 5×1010years, but for the ionized187Re, it is less by 9 degrees. In multi-charged radioactive ions, there is bound beta-transformation, that is ...
Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table. It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history. Like all other act...
has promotes saliva or body fluids relieves thirst, purifies the mind the clear vision, stimulates awakes the brain, goes to the greasy digestion, suppression atherosclerosis as well as guards against the cancer, preventing and controlling scurvy and protects the imperial radioactive element an[transla...