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An isotope of an element has a specific number of neutrons. (Calculated as the mass number minus the atomic number) Most elements have more than one isotope, for example Cl with 17 protons has three naturally occurring isotopes in nature, chlorine-35, with 18 neutrons and chlorine 37 with 20 neutrons along with a trace of chlorine-36 with 19 neutrons.
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What does the atomic mass of an element repreasent?
The atomic mass number of an isotope represents the sum of the numbers of neutrons and of protons in a nucleus of the isotope. For elements with more than one stable (non-radioactive) isotope naturally occurring, the atomic mass of the element as shown in a reference is the weighted average of the atomic masses of all the naturally occurring isotopes, weighted by the fraction that each isotope constitutes of the total natural supply of the element.
What is the process in which one isotope changes to another isotope?
Radioactive decay is the process in which one isotope is changed into another isotope.
What is an atom called when the number of neutron changes?
an isotope of an element
What is a Cosmogenic isotope?
a cosmogenic isotope is an isotope that is created in space by cosmic rays
What is isotope effect?
isotope effect occurs when there is a difference in the rate of reaction when an atom is replaced by an isotope.
How do the nuetrons relate the the identity of an atom?
The number of neutrons and protons together constitutes the mass number of a single isotope of an element.
The half-life of a certain radioactive isotope is 12 hours If you start out with 10 g of the isotope after 1 day there will be?
If you take one day equal to 24 hours, then 1 day constitutes 2 Half lives. Mass of isotope left after 12 hours=10/2=5g Mass of isotope left after 2 half lives or 1 day=5/2=2.5g.
What element has 28 subatomic particles in the nucleus of one atom?
The only non-radioactive isotope with the specified properties is silicon-28, which constitutes more than 90 % of naturally occuring silicon.
What does the atomic mass of an element repreasent?
The atomic mass number of an isotope represents the sum of the numbers of neutrons and of protons in a nucleus of the isotope. For elements with more than one stable (non-radioactive) isotope naturally occurring, the atomic mass of the element as shown in a reference is the weighted average of the atomic masses of all the naturally occurring isotopes, weighted by the fraction that each isotope constitutes of the total natural supply of the element.
Isotope A has half-life of seconds and isotope B has a half-life of millions of years which isotope is more radioactive?
Isotope A
What is the process in which one isotope changes to another isotope?
Radioactive decay is the process in which one isotope is changed into another isotope.
What is a Cosmogenic isotope?
a cosmogenic isotope is an isotope that is created in space by cosmic rays
What is an atom called when the number of neutron changes?
an isotope of an element
What is the stable isotope that is formed by the breakdown of a radioactive isotope?
That's called a daughter isotope, or a daughter product. (The original isotope that decayed is the parent isotope.)
244 94Pu is an of plutonium?
isotope
What is silicons most common isotope?
The most common isotope of silicon is the isotope 28Si: 92,23 %.
How is radioactive Isotope different from a stable isotope?
The radioactive isotope is disintegrated in time and emit radiations.
