The time required for one-half of the mass of the unstable nuclei in a nuclide to decay is known as the _____?
The time required for one-half of the mass of the unstable nuclei in a nuclide to decay is known as the half-life of that unstable nuclide.
Example: Imagine you start with 100 atoms of nuclide A. A decays to nuclide B with a half life of 5 days. After 5 days 50 atoms of A are left, the other 50 have decayed to B. After 10 days (2 half lifes) only 25 atoms of A are left and total 75 atoms have decayed to B and so on. This is how half-life of a unstable radioactive nuclide works.
The time required for one-half of the mass of the unstable nuclei in a nuclide to...
At a time t=0 a sample contains 2.5x10^10 nuclei of a particular nuclide. Exactly one half year later the sample contains 2.0x10^10 nuclei of the same species. calculate the half-life the decay.
The number of unstable nuclei remaining after a time t 5.00 yr is N, and the number present initially is N0. Find the ratio N/N0 for (a) (half-life 5730 yr), (b) (half-life 122.2 s; use t 1.00 h, since otherwise the answer is out of the range of your calculator), and (c) (half-life 12.33 yr).
50% of the nuclei in a radioactive sample decay in one half life. What percent decay in four half lives?
For each of the following unstable nuclides, predict the daughter nuclide by determining the most likely mode of decay. Au-203 Zn-58 Pt-180 Ne-31
A Radioactive Isotope is 1. Time for half of a sample to decay from parent isotope to daughter isotope for radioactive atoms 2. The technique of getting the age of something by using unstable isotopes 3. An element that has unstable nuclei and will transform itself into another element 4. The process of an element transforming into another element by changes of its nucleus
A sample contains 7.10×104 radioactive nuclei. In a time of 3 minutes, 3.50×103 of the nuclei decay. Evaluate the half life of the sample (in minutes).
Beryllium-8 is an unstable isotope and decays into two α particles, which are helium nuclei with mass 6.68×10−27kg. This decay process releases 1.5×10−14J of energy. For this problem, let's assume that the mass of the Beryllium-8 nucleus is just twice the mass of an α particle and that all the energy released in the decay becomes kinetic energy of the α particles. If the Beryllium-8 nucleus is moving in the positive x-direction with a speed of 1.0×106 m/s when it...
The hydride of an unstable nuclide of a Group IIA metal, MH2(s), decays by a-emission. A 0.025-mol sample of the hydride is placed in an evacuated 1.1 −L container at 298 K. After 64 minutes, the pressure in the container is 0.49 atm. Find the half-life of the nuclide. Express your answer to two significant figures and include the appropriate units.
Unstable atomic nuclei can decay, or split up, by giving out nuclear radiation. What is commonly formed during this process occurs? (Answer in three sentences)
If a radionuclide has a half-life of 10 years, how many parent nuclide atoms will be left after 10 years since the start of the decay? How many daughter nuclides will exist at that time? Assume daughter nuclides are stable. Please show explanation, Thank You