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A particular element has a half life of 27 daysafter 54 days how much of the radioactive material is left?
The half life is the time it takes for half the atoms in a given sample to decompose. Knowing this then after 27 days there is half the amount left. After 54 days then there is half that half left so that's a quarter.
How much of the radioactive element will be left one billion years from now?
That depends on the "half-life" of that particular radioactive element, which the question forgot to state. They're all different. Various radioactive elements have half-lives ranging from microseconds to millions of years.
What is this element used for?
This element is used for that process, and for the preparation of those compounds.
All radioactive nuclides of an element have the same half life?
No, halflife is a bulk statistical property of a quantity of an isotope of an element.Individual nuclei do not have halflives, instead they have a probability of decaying at the current moment of time.
What is HL?
It depends on what you mean by HL. It could mean Half life I guess, which is an award winning computer game by valve. And also a scientific term used to describe the time it takes for half of all of the atoms to decay from a molecule.
How can half lives be shortened?
Half life of an element can't be changed.. It is a characteristic of a radioactive element which is independent of chemical and physical conditions.. Half life is that time in which half of radioactive sample( i.e., a radioactive element) decomposes. So no matter what amount you take half life of an element remains same.
The half-time of an element is important for determining the?
...age of the sample.
What is argon's half-life?
Argon does not have a half-life because it is a stable element. Argon-40, a radioactive isotope of argon, has a half-life of about 1.25 billion years and is commonly used in radiometric dating.
What kind of radioactive waste has the longest half-life?
Uranium has the longest half-life element
What is the element used for dating?
The element used for dating is carbon
The half life of an element is important for determining the blank of a rock?
answer is b
Element with shortest half life?
Technetium-97 has the shortest half-life of any naturally occurring element, with a half-life of about 4.2 million years. Artificially produced elements typically have even shorter half-lives, with some lasting only fractions of a second.
Are Nuclear wastes non biodegradable?
Actually, they are biodegradeable, sort of. Radioactive materials do decay, or become weaker over time. Eventually they become inert, or non-radioactive. The problem is some radioactive isotopes take tens or even hundreds of thousands or millions of years to decay. The decay rate of a radioactive element is measured in half-lives. After one half-life, half of the radioctivity is gone. Take an element with a half-life of ten years. After ten years, there is half of the radioactivity present. After 20 years, one quarter, after 30 years, one eighth, and so forth. Eventually the level will fall to the point it poses no danger. Plutonium-239 has a half-life of 24,000 years. Uranium-235, used in nuclear reactors, has a half-life of 713,000,000 years.
The half-life of an element is important for?
The half-life of an isotope is how long it takes for half of the atoms in a mass to undergo radioactive decay. Say you have 40g of an elements isotope with a half-life of one year. After 1 year, there would be 20g of that isotope left, and 20g of a different isotope/element. After 2 years, there would be 10g, and so on...
A half - life of an element is important for determining the what of a rock?
The age of the rock. By measuring the amount of parent and daughter isotopes in a rock sample and knowing the half-life of the radioactive element, scientists can calculate the age of the rock.
How is the half life of an isotope defined?
A half-life is the time taken for the radioactivity of a material to fall to half its original value. A material can undergo infinite half-lives because each time it falls to half the next half-life falls to half of that half: No half-lives have elapsed when radioactivity is at the original amount; 1/1. 1 half-life is when radioactivity is at 1/2 2 half-lives is when radioactivity is at 1/4. 3 half-lives is when radioactivity is at 1/8. 4 half-lives is when radioactivity is at 1/16. And so on.
Is gold a mixture or a compound?
Neither. Gold is an element. Most gold jewelry, though, is made from an alloy of gold and copper. Alloy is just another word for mixture, I guess. 24K gold is pure gold, 12K gold is half gold half copper, etc. Gold is a very soft metal, and adding copper makes is stronger.
