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Why are the nuclei of elements with atomic numbers greater than 82 naturally radioactive?
Massive nuclei are unable to remain bound aganst the repulsive force of their protons, which all have positive charge. This also occurs with elements #43 (technetium) and #61 (promethium) which because of their particular nuclear geometry are inherently unstable and radioactive, with the only natural isotopes having half-lives of just over 2 years.
How do radioisotopes of an element differ feom other isotopes?
Radioisotopes are "radioactive isotopes"; they are not stable. Radioactive atoms will decay, or break apart into other atoms, by emitting an electron, or a neutron or a positron or an alpha particle (2 protons and two neutrons). The rate at which this happens is measured by the "half-life"; after one half-life, half of the atoms will have decayed. After another half-life, half of the remaining atoms will have decayed. Atoms with short half-lives are highly radioactive, and can be fairly dangerous. Atoms with long half-lives are only slightly radioactive, and aren't all that dangerous.
Where does Flo-Rida live today?
Flo Rida lives in himself and so does the rest of the people in the world. We all as human beings live in Flo Rida
Where in Essex does Jessie J live?
Sorry all I can tell u is she lives in london essex but I dont want people tracking her dow so i wil do it in stars ** *********** **** thx
How many elements are in the star Sirius?
All of the elements in the periodic table
Which elements have no useful purposes at all?
All elements have a useful purpose, including the synthetic actinides that have half-lives measured in milliseconds.
What is the half life of a radioistope?
The half-life of every isotope is different. Some elements and isotopes have half-lives in millions of years, while some elements have half-lives measured in milliseconds. You can look up all of the specifics for any element at webelements dot com.
Do all isotopes have the same half lives?
Yes, all elements have at least one radioactive isotope. Hydrogen has two isotopes, Deuterium and Tritium. H3 has a half life of 12.3 years. Not all isotopes are radioactive. About half way up the atomic mass table, Tin appears to have the greatest number of stable isotopes - ten out of about 124 isotopes in all.
Do all elements have a half-life?
No, not all elements have a half-life. Half-life is a property of radioactive elements that undergo decay over time. Non-radioactive elements do not have a half-life because they do not decay in the same way.
Do all elements half half lifes?
yes they do
What is special about all the elements beyond uranium on the periodic table?
Elements beyond uranium are known as transuranium elements, which are all synthetic and unstable. They are typically produced in laboratories through nuclear reactions and have very short half-lives. These elements are important for scientific research into nuclear structure and properties.
What is a transuranium metal?
elements that have a higher atomic number than the element Uranium (92). Twenty have been discovered and they are all unstable with half-lives
Do all elements have half life's?
Yes. From a technical point of view, all elements have isotopes (nuclides) that are radioactive and therefore have half-lives. But the majority of these are artificial - man made, and do not occur in nature on Earth. Even hydrogen has nuclides of deuterium and tritium, deuterium is stable and natural, and tritium has a half life of 12.33 years. Having said that, there are a number of nuclides that are stable and occur naturally.
How many half lives does it take for half of a radioisotope to dissipate?
It depends on the radioisotope. They do not all have the same half life.
What is the range of half-lives of different radioactive element?
It would be quite difficult to list all radioactive elements and their half lives in this area. Lithium 5 has a half life of about a trillionth of a second. Uranium 238 has a half life of about 4.7 billion years. Since the world is about 4.2 billion years, over half the Uranium 238 is still around. The first element in the Periodic Table, Hydrogen, has a radioactive form, Hydrogen 3. It has a half life of about Twelve and a half years. Helium has a radioactive form, Helium 5. It's half life is a trillionth of a second. Then you get to elements with different radioactive isotopes. You will need to look them up in a handbook. Tin is the element with the most isotopes.
Why is astatine is the rarest element on the earth?
Astatine is the rarest naturally occuring element on Earth because all its isotopes are radioactive with very short half-lives. The most stable, At-210 has a half-life of 8 hours, so any astatine that forms (by radioactive decay of heavier elements) quickly decays to other elements.
When smoking half a joint to save the other half for later how do you kill half a joint?
ye dont smoke it all
