The mass number of an isotope is the number after its name, such as carbon-14. You can also calculate the mass number of an isotope by adding the...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your to...
Described in the simplest form, the measurement of a number N ( i E) of atoms of an isotope i E of an element E, can be performed by adding a known number of atoms N ( j E) of another isotope j E (= a "spike") of the same element, and measuring the number-ratio N ( i ...
How to find the mass number of an isotope?What are Isotopes?Isotopes are different 'versions' of an element differing in the number of neutrons found in the nucleus. The atomic weight for an element is usually not an integer as it is the weighted averages of all the isotopes of that ...
10 An isotope of element Y has 19 protons and 20 neutrons in its nucleus. Which is the symbol for the ion of Y?B A. ½{20}{0}x B ½{30}{3}Y* C $$ \begin{matrix} 2 0 \\ 1 9 \end{matrix} $$Y D. $$ _ { 1 9 } ^ { 3 9 } $$Y 相关知识点: 试题来源: ...
Hence, the generally accepted interpretation of the eclogite xenolith oxygen isotope signatures is that they represent a protolith that experienced alteration processes in the crust before subduction into the mantle. The range in δ18O values of eclogites is taken to reflect derivation from different ...
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115 Stable isotope technology has permitted determination of fractional catabolic and synthetic rates for a large number of proteins116 and can be used to determine which amino acids are essential for the premature neonate.117 Doubly labeled water has been used for the determination of rates of CO2...
Isotope and nuclide are closely related terms. When one speaks of isotopes, they are referring to the set of nuclides that have the same number of protons. Nuclide is a more general term, referring to a nuclear species that may or may not be isotopes of a single element. Examples: ...
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Carbon-14 is a radioactive isotope of carbon used by archaeologists to date objects and remains. Carbon-14 is naturally occurring in the atmosphere. Plants take it up in respiration, in which they convert sugars made duringphotosynthesisback into energy that they use to grow and maintain other ...