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Hi,

Each half-life means the mass of the sample has decreased by 1/2 its mass.

Thus;

After 1 half-life, 1/2 the sample has decayed.

After 2 half-lives 3/4 of the sample has decayed.

Hope this helps.

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How do you explain the half-time of a radioactive material?

The half-life of a radioactive material is the time it takes for half of a sample of the substance to decay. It is a characteristic property of the specific radioactive isotope and is used to determine the rate of decay and the stability of the material. The half-life can vary greatly depending on the isotope, ranging from fractions of a second to billions of years.


How long will it take half of a radioactive sample to decay?

The time it takes for half of a radioactive sample to decay is known as the half-life. Each radioactive element has a unique half-life, which could range from fractions of a second to billions of years. The half-life remains constant regardless of the size of the initial sample.


What is the half life of radioisotope?

Half life is the time taken for approximately half of the available nuclei in a sample of radioactive material to decay into something else. It's a characteristic of the isotope, for example, the half life of the isotope of iodine, I131 is 8.08 days. Half lives can vary from fractions of a second to thousands of years.


A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?

If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.


What is meant by the half-life of a radioactive nuclide?

A half-life is the time it takes for half the original quantity of a given radioisotope to decay. If we are given a sample of one kind of radioactive material, the time it takes for half of it to undergo radioactive decay is the half-life of that radioisotope. It's a statistically derived figure, but scientists have arrived at some very accurate figures to denote the half-life of different radioactive isotopes.The half-life of an unstable material is a constant which is characteristic of exponential decay. This follows because at any time in the decay process the number of disintegrations per second is proportional to the number of atoms of the isotope present, and this is generally unaffected by any physical influence on the material.The half life of a radioactive isotope (radioisotope) is the amount of time required before half of the original mass of the isotope has decayed. For example, the radioisotope Uranium-238 i has a half-life of 4.46 billion years, therefore, if you have 100g of uranium-238 today in 4.46 billion years you will only have 50g.Radioactive substances undergoes decaying process by emitting alpha and beta particles from its nuclei of its own atoms. The time required to desintegrate half of the amount of a radioactive substance is its half life.

Related Questions

How do you explain the half-time of a radioactive material?

The half-life of a radioactive material is the time it takes for half of a sample of the substance to decay. It is a characteristic property of the specific radioactive isotope and is used to determine the rate of decay and the stability of the material. The half-life can vary greatly depending on the isotope, ranging from fractions of a second to billions of years.


How long will it take half of a radioactive sample to decay?

The time it takes for half of a radioactive sample to decay is known as the half-life. Each radioactive element has a unique half-life, which could range from fractions of a second to billions of years. The half-life remains constant regardless of the size of the initial sample.


What is the half life of radioisotope?

Half life is the time taken for approximately half of the available nuclei in a sample of radioactive material to decay into something else. It's a characteristic of the isotope, for example, the half life of the isotope of iodine, I131 is 8.08 days. Half lives can vary from fractions of a second to thousands of years.


How long does it take a radioactive atom to decay?

The time it takes for a radioactive atom to decay can vary significantly depending on the specific isotope. This is measured in terms of a half-life, which is the time it takes for half of the radioactive atoms in a sample to decay. Half-lives can range from fractions of a second to billions of years.


Compared to the length of time for the first half-life of a sample of a radioactive isotope the length of time for the second half-life is?

The length of time for the second half-life is the same as the first half-life. Each half-life represents the time it takes for half of the radioactive atoms in a sample to decay. This process continues exponentially with each subsequent half-life.


What is the term for the amount of time it takes 50 of an element to decay?

The term for the amount of time it takes for half of a quantity of an element to decay is called "half-life." This is a key concept in nuclear physics and radioactive decay, indicating the time required for half of the radioactive atoms in a sample to transform into another element or isotope. Each radioactive isotope has its own unique half-life, which can range from fractions of a second to billions of years.


How much of an original isotope remains at the end of a second half-life?

At the end of a second half-life, one-fourth (25%) of the original isotope remains. This is because each half-life halves the amount of the isotope present.


A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?

If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.


What fraction of a radioactive sample remains after one half-life?

Half of the original sample of a radio isotope remains after a half-life period. After two half-life periods, one-fourth of the radio isotope remains.


What is the rate in halflife that radioactive decay occurs?

Half-life is the time it takes for one half of a certain type of atom (isotope) to decay. The amount of time varies a lot between different isotopes; in some cases it may be a fraction of a second, in another, it may be billions of years.


What is meant by the half-life of a radioactive nuclide?

A half-life is the time it takes for half the original quantity of a given radioisotope to decay. If we are given a sample of one kind of radioactive material, the time it takes for half of it to undergo radioactive decay is the half-life of that radioisotope. It's a statistically derived figure, but scientists have arrived at some very accurate figures to denote the half-life of different radioactive isotopes.The half-life of an unstable material is a constant which is characteristic of exponential decay. This follows because at any time in the decay process the number of disintegrations per second is proportional to the number of atoms of the isotope present, and this is generally unaffected by any physical influence on the material.The half life of a radioactive isotope (radioisotope) is the amount of time required before half of the original mass of the isotope has decayed. For example, the radioisotope Uranium-238 i has a half-life of 4.46 billion years, therefore, if you have 100g of uranium-238 today in 4.46 billion years you will only have 50g.Radioactive substances undergoes decaying process by emitting alpha and beta particles from its nuclei of its own atoms. The time required to desintegrate half of the amount of a radioactive substance is its half life.


Do radioactive isotopes disintegrate easily?

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