Atomic Structure and Isotopes (4E)
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QUESTION
State the formula for the average atomic mass from isotopic masses and fractional abundances.
QUESTION
Identify the formula for neutrons
n
n
n
in terms of mass number
A
A
A
and atomic number
Z
Z
Z
.
QUESTION
What is the definition of isotopes of the same element?
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ANSWER
Same
Z
Z
Z
(protons), different
A
A
A
(neutrons). Isotopes share the same atomic number
Z
Z
Z
but differ in mass number
A
A
A
due to varying neutron counts.
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