The atomic mass of an element is
A) the average atomic mass of its isotopes according to their proportions in nature.
B) the average mass number of its isotopes according to their proportions in nature.
C) the average atomic number of its isotopes according to their proportions in nature.
D) the atomic mass of its most abundant isotopes.
Correct Answer:
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Q3: The statement that the elements in a
Q8: The most abundant element in the universe
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Q13: At room temperature, bromine is a
A) colorless
Q14: According to the periodic table, the chemical
Q17: The metals most difficult to extract from
Q17: The least active of the following metals
Q18: Which one or more of the following
Q19: The least active of the following nonmetals
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