Isotopes Flashcards
1
Q
What are isotopes?
A
They are atoms that have the same atomic number but different mass numbers. They have the same number of protons but different number of neutrons.
2
Q
Give an example of an element that exists as isotopes
A
Chlorine
3
Q
What is meant by ‘relative atomic mass’?
A
The average mass of an atom, taking into account then amount of each isotope present in a naturally occurring sample of an element.
4
Q
What is the symbol for ‘relative atomic mass’?
A
Ar
5
Q
How do you calculate the relative atomic mass?
A
(% of Isotope A x mass of isotope A) + (% of Isotope B x mass of Isotope B)
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