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The time taken for the radioactivity to halve its intensity, starting from any arbitrarily chosen instant.
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Best definition of half-life for a radioactive substance?
The half-life of a radioactive substance is the time it takes for half of the atoms in a sample to decay. It is a constant characteristic of each radioactive isotope. After one half-life, half of the original substance will remain, and the other half will have decayed into other elements.
Is the best definition of half-life for a radioactive substance A. Half of the amount of time required for all of the radioactive atoms to decay. B. The amount of time required for half of the rad?
The best definition of half-life for a radioactive substance is B. The amount of time required for half of the radioactive atoms to decay. This concept describes the time it takes for a given quantity of a radioactive isotope to reduce to half its original amount through the process of radioactive decay. Option A is incorrect because it inaccurately suggests that half-life refers to the time for all atoms to decay, which is not the case.
What is definition of half life?
The time required for half of the atoms in a radioactive substance to disintegrate.
What affect the half life of a radioactive substance A the mass of the substance B the temperature of the substance C the addition of a catalyst D the type?
A. The half-life of a radioactive substance is determined by the specific decay process of that substance, so it is not affected by the mass of the substance or the temperature. B. The mass of the substance does not affect the half-life of a radioactive substance. C. The addition of a catalyst does not affect the half-life of a radioactive substance. D. The type of radioactive substance directly determines its half-life, as different substances undergo radioactive decay at varying rates.
What is the radioactive half-life of water?
Ordinary water is not radioactive, so it has no half-life.
What is the name of the average time needed for half The nuclei and a sample of radioactive substance to undergo radioactive DS our B radioactive substance to undergo radioactive decay?
The average time needed for half of the nuclei in a sample of a radioactive substance to undergo radioactive decay is called the "half-life." This period is a characteristic property of each radioactive isotope and varies significantly between different substances. During one half-life, the quantity of the radioactive material reduces to half of its original amount.
What is the time it takes for half of a raioactive substance to decay?
The time it takes for half of a radioactive substance to decay is known as the half-life of the substance. It is a fixed characteristic of a particular radioactive material and varies depending on the specific isotope.
How to calculate radioactive decay and its impact on the half-life of a substance?
To calculate radioactive decay, use the formula N N0 (1/2)(t/T), where N is the final amount of substance, N0 is the initial amount, t is the time passed, and T is the half-life of the substance. The impact of radioactive decay on the half-life of a substance is that it represents the time it takes for half of the radioactive atoms in a sample to decay.
How do you calculate the decay constant for a radioactive substance?
The decay constant for a radioactive substance is calculated by dividing the natural logarithm of 2 by the half-life of the substance. The formula is: decay constant ln(2) / half-life.
What is the best definition of half-life for a radioactive substance?
It indicates how long it takes for the material to decay.
If the half-life of a radioactive substance is 10 hours how long will it take for 50 percent of it to decay?
The half-life of a radioactive isotope is defined as the time taken for the isotope to decay to half of its initial mass. So to decay to 50 percent of its initial mass will take one half-life of the isotope. One half-life of the isotope is 10 hours so the time taken to decay is also 10 hours.
When the rate of radioactive decay becomes smaller half life becomes what?
When the rate of radioactive decay decreases, the half-life of the radioactive substance increases. This is because a smaller decay rate means that it takes a longer time for half of the radioactive atoms to decay. Consequently, the half-life, which is the time required for half of the substance to decay, extends as the decay rate diminishes.
