Solved: Calculating the Atomic Weight of an Element from
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Problem 1PE
Calculating the Atomic Weight of an Element from Isotopic Abundances
Naturally occurring chlorine is 75.78% 35CI (atomic mass 34.969 amu) and 24.22% 37CI (atomic mass 36.966 amu). Calculate the atomic weight of chlorine.
The atomic weight of copper, Cu, is listed as 63.546. Which of the following statements are untrue?
(a)Not all the atoms of copper have the same number of electrons. (b)AII the copper atoms have 29 protons in the nucleus, (c) The dominant isotopes of Cu must be 63Cu and 64Cu. (d)Copper is a mixture of at least two isotopes, (e) The number of electrons in the copper atoms is independent of atomic mass.
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