Question

Can you identify any relationship between the abundance of an element and its atomic weight? Are...

Can you identify any relationship between the

abundance of an element and its atomic weight? Are there any obvious exceptions to this

relationship?

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Answer #1

Average atomic is sum of of an element is the sum of the atomic masses of their isotopes multillied by their natural abundance (abundance is given in percentage so take it by dividing 100)

If an element has two isotopes and their masses are M1 and M2 respectively. And their natural abundance are X1 and X2 ,then

Average atomic mass = M1X1 + M2X2

Average atomic mass will be in between mass of their isotopes.

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