Isotopes have different atomic number (Z)but the same mass number (A).
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Q2: The vertical columns in the periodic table
Q3: The number of protons and neutrons in
Q4: All matter is composed of atoms.
Q5: A 0.920-gram sample of magnesium is allowed
Q6: Atoms combine in small,whole-numbered ratios.
Q8: Different ratios of atoms produce different compounds.
Q9: Dalton's atomic theory is based on several
Q10: Choose the INCORRECT statement.
A)The law of constant
Q11: Robert Millikan determined the charge on an
Q12: Which of the following would be unaffected
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