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Isotopes (1)
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Definition of isotopes
Atoms of the same element with the same number of protons but different number of neutrons
Example of isotopes for chlorine
Chlorine-35 and chlorine-37
The factor of atoms chlorine-35 and chlorine-37 have different masses
The number of neutrons in the nucleus are different
Standard representation of chlorine-35
The number of protons for Chlorine-35 and Chlorine-37
17
Relative Atomic Mass of Isotopes (1)
Most elements exist naturally as a mixture of two or more isotope
Relative Atomic Mass of Isotopes (2)
Relative atomic mass of these elements depend on the natural abundance of isotopes in a sample
Natural abundance
Is the percentage of isotopes present in a natural sample of element
Formula to calculate the relative atomic mass
Relative atomic mass = ∑(% isotope × mass of isotope)/100
Examples of isotopes used in medicine field (1)
Cobalt-60
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