Two atoms that have the same chemical characteristics but different atomic masses are considered __________.or
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Q1: An atomic nucleus consists of protons and
Q2: Which of the following statements accurately describes
Q3: Two atoms that differ only in the
Q11: Within the periodic table, elements are organized
Q12: Radioisotopes contain
A) an insufficient number of neutrons.
B)
Q15: The half-life of a radioisotope is at
Q16: The number of neutrons in an atom
Q17: Biological half-life is the time required for
A)
Q19: An element's atomic number is determined by
Q20: When diagramming an atom, how many electrons
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