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What happens to the mass of a radioactive isotope as it decays?
Wiki User
∙ 13y ago
In reality, as the atoms gets decayed it gives out radiations such as alpha, beta and Gama. Alpha is a helium nucleus which is massive and beta is electron but fast moving and Gama is an electromagnetic radiation. So as the atom decays then its mass is likely to be reduced.
Rutherford's radioactive law deals with the number of atoms undecayed present at an instant 't' given in the form N = No e-lambda t
Here No is the total atoms present both decayed and undecayed in a sample.
N is the number undecayed present
lambda - the decay constant
t - the time elapsed
Wiki User
∙ 13y ago
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What is the mass of the isotope 195Au?
195Au is an isotope of gold with a half life of about 186 days. It decays into 195Pt, an isotope of platinum. Its mass is 194.97 atomic mass units.
What is the atomic mass of roentgenium?
The atomic mass of the most stable isotope of Roentgenium is 281. This most stable isotope decays in around 36seconds. Oddly, it's most stable isotope has the same atomic mass as the most stable isotope of the element before: Darmstadtium.
What happens to the atomic mass number in a radioactive substance?
In a radioactive substance, the atomic mass number may change as a result of radioactive decay. During radioactive decay, radioactive atoms undergo nuclear reactions, which can lead to the emission of radioactive particles such as alpha or beta particles. These emitted particles can cause a change in the number of protons and neutrons in the nucleus, resulting in a different atomic mass number for the resulting atom or isotope.
What is the valency of an atom of a mass number 25?
The only non-radioactive isotope with a mass number of 25 is magnesium-25. The valency of magnesium is 2.
What do you know about an isotope?
Isotopes have same atomic number. They have different mass numbers. Their physical properties are different.
What is the mass of the isotope 195Au?
195Au is an isotope of gold with a half life of about 186 days. It decays into 195Pt, an isotope of platinum. Its mass is 194.97 atomic mass units.
In a time equal to two half-lives of a radioactive isotope would you expect all of that isotope to have decayed?
No. In two half-lives, a radioactive isotope will decay to one quarter of its original mass. In one half-life, one half of the mass decays. In the next half-life, one half of the remaining mass decays, and so on and so forth. At each half-life point, you would see 0.5, 0.25, 0.125, 0.0625, etc. remaining. The logarithmic equation is... AT = A0 2(-T/H)
What is tridium?
a radioactive isotope of hydrogen with a mass approximately three times that of the common protium isotope
What is the atomic mass of roentgenium?
The atomic mass of the most stable isotope of Roentgenium is 281. This most stable isotope decays in around 36seconds. Oddly, it's most stable isotope has the same atomic mass as the most stable isotope of the element before: Darmstadtium.
What happens to the atomic mass number in a radioactive substance?
In a radioactive substance, the atomic mass number may change as a result of radioactive decay. During radioactive decay, radioactive atoms undergo nuclear reactions, which can lead to the emission of radioactive particles such as alpha or beta particles. These emitted particles can cause a change in the number of protons and neutrons in the nucleus, resulting in a different atomic mass number for the resulting atom or isotope.
What is the valency of an atom of a mass number 25?
The only non-radioactive isotope with a mass number of 25 is magnesium-25. The valency of magnesium is 2.
When radioactive decays stop?
It will stop when there is nothing left to decay. There is basically no way to stop certain nuclides (isotopes) from decaying.
What has the author Robert R Wolfe written?
Robert R. Wolfe has written: 'Isotope tracers in metabolic research' -- subject(s): Metabolism, Methodology, Radioactive tracers in biochemistry, Research 'Radioactive and stable isotope tracers in biomedicine' -- subject(s): Isotope Labeling, Mass Spectrum Analysis, Metabolism, Methodology, Methods, Radioactive tracers in biochemistry, Research
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.
What happens if the proton number changes?
Mass of an element will increase, creating an isotope.
How is an isotope and a mass number related?
An isotope is member of an element of Mass Number differing from the average; for example, the most common isotope of Carbon is 12C (6 protons, 6 neutrons), where 13C and 14C would be less common (even unstable, radioactive) isotopes. So isotopes are varying forms of an element, differing in mass number.
What happens to the mass number when it undergoes beta decay?
nothing, but another isotope with the same atomic mass is formed
