Two Atoms Appear to Have the Same Mass Number

question 10

Multiple Choice

Two atoms appear to have the same mass number. These atoms

• A) must have the same atomic number.
• B) must have the same number of electrons.
• C) must have the same chemical properties.
• D) must have the same number of protons + neutrons.
• E) must have the same atomic number, the same number of protons + neutrons, the same number of electrons, and the same chemical properties.

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