what is the difference between radioactivity and decay?

Q: Radioactive nuclide, 90Sr, has a half-life of 30 years. What percent of a sample of 90Sr will|…

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Q: Long and strong Conclusion about radioactivity

A: Radioactive decay involves the spontaneous transformation of one element into another. The only way…

Q: Suppose that you start with 3.65 g of a pure radioactive substance and determine 19.6 h later that…

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Q: The radioactive isotope Gold-198 has a half-life of 64.80 hrs. A sample  containing this isotope…

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Q: Find the number of atoms in the sample after 10 days.

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Q: Write the radioactive decay equation. Include all decay products (mass numbers, atomic numbers, and…

A: For α-decay : In α-decay of a radioactive parent nucleus , the mass and change of daughter nucleus…

Q: What is a radioactive tracer?

A: Radiactive tracer: The tracer is used to detect the radioactive particle in any kind of mechanism.…

Q: The activity of a radioisotope drops to 1/32 of its original value in 25 minutes. The decay constant…

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Q: Why does radioactivity take place?

A: Radioactivity is the process of emitting radiation.

Q: After two half-lives of radioactivity amount of radioactive atoms remaining is none O N/2 N/4 O N/8

A: Given data: Number of half-lives (n) = 2 Required: Remaining amount after 2 half-lives

Q: are radioactivity and radioactive decay the same concepts?

A: Radioactivity is the process by which an unstable  atomic nucleus loses energy by emitting…

Q: The radioactive isotope (183-Ta) has a half life of 5.11 days. A sample containing the isotope as an…

A: Given data: Half-life t12=5.11 days Initial activity R0=4.5×108Bq

Q: The activity of a radioactive sample decreases exponentially as the time goes on.

A: Radioactivity of a sample is given as, Where A0 is the initial activity, lambda is the half life…

Q: How is radioactive emission different from radioactivity and radioactive decay?

A: Radiation is a broad term that encompasses all types of energy output and transmission, including…

Q: image11

A: The relation of the half-life in terms of wavelength is λ=0.693t1/2 Let's write the decay rate…

Q: A freshly prepared sample of a certain radioactive isotope has an activity of 3.7 × 1011 decays/s.…

A: Relation between activity of the radioactive isotope and half life…

Q: Radioactivity is a natural process. O True O False

A: Radioactivity is a natural process . True  or  False

Q: To date the age of the oldest materi als, scientists would normally tum to the radioactivity of a.…

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Q: What is the long-range fate of all the uranium that exists in the world?

A: Uranium-238 is a radioactive element which decays in series of 4 steps.

Q: After three half lives have gone by, what fraction of a sample of a radioactive isotope remains?

A: A half-life is a time period during which nuclei of radio-active sample becomes half of its initial…

Q: what is the uses of radioactivity in x-rays

A: X-ray is an energetic wave. It is the most penetrating wave. Its wavelength ranges from 10…

Q: Two common units for measuring radioactivity are the Becquerel and the curie. Why are these names…

A: Radioactivity is the phenomenon when a large nucleus splits into a small nucleus.

Q: Does food irradiation leave the food radioactive? To what extent is the food altered chemically for…

A: The process of exposing the food into a controlled amount of energy in the form of high speed…

Q: Why is lead found in all deposits of uranium ore?

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Q: What are the types of Radioactivity?

A: There are three types of radioactivity and they are: Alpha decay: An alpha particle is a helium…

Q: If Th-234 emits a beta particle, what nucleus is formed?

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Q: What is the half-life of an isotope that decays to 6.25% of its original activity in 24.2 h?…

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Q: The ruins of the Chernobyl reactor are enclosed in a huge concrete structure built around it after…

A: The Chernobyl nuclear reactor is a closed reactor which is situated in Ukrain. The ruins of this…

Q: What characteristics of radioactivity show it to be nuclear in origin and not atomic?

A: Radioactivity is a type of process in which there is an emission of the particle from unstable…

Q: Why is it necessary to take special safety precautions when using radioactivity?

A: The radioactivity is expressed as a nuclear process in which decay of unstable nucleus occurs, and…

Q: A 25g piece of charcoal is discovered in a prehistoric cave. Carbon 14 of the sample shows a…

A: in this question we have to find year of trees by their samples of carbon . with help of radio…

Q: What is radioactive nuclide?

A: The nuclides which go through unconstrained rot are called a radioactive nuclide.

Q: What isotope is produced when Np-239 emits a beta particle?

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Q: the particle responsible for radioactivity :

A: The process by which an unstable atomic nucleus loses energy by radiation is called radioactivity.…

Q: A radioactive isotope has a half-life of 10 minutes. At the start of an experiment, the activity of…

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Q: Radioactivity depends on the nucleus and not the atom or its chemical state. Why, then, is one…

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Q: If the half-life of a radioisotope is 2 days, after how many days is the quantity reduced to 12.5%…

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Q: Explain the contribution of Marie Curie in nuclear radioactivity.

A: Marie curie discovered two new element radium and polonium with their radioactive property she was…

Q: The half-life, which is unique to any given isotope, is defined as:

A: We know  half life :-The time taken for half of the original population of radioactive atoms to…

Q: A Geiger  counter registers a count rate of 8000 counts per minute from a sample of a radioisotope.…

A: count rate at t=0 is Ao =8000 counts/min count rate at t=24 is A=1000 counts /min

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.