The element magnesium, Mg, has three common isotopes: 24Mg, 25Mg, and 26Mg. The difference between these three isotopes is
A) the number of neutrons.
B) the number of electrons.
C) the number of protons.
D) the number of protons and electrons.
E) their physical state.
Correct Answer:
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Q20: The mass number of an atom represents
A)the
Q21: Which of the following statements about isotopes
Q22: List the number of protons, neutrons, and
Q23: The correct isotope symbol for the isotope
Q24: Which one of the following has as
Q26: The number of neutrons in an atom
Q27: Atoms of different isotopes of a given
Q28: The overall charge of an atom is
Q29: List the number of protons, neutrons, and
Q30: Identify the element or ion shown in
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