Which of the Following Is Not True for the Atoms

question 97

Multiple Choice

Which of the following is not true for the atoms ¹³N,¹⁴N,and ¹⁵N?

• A)They all have the same mass number.
• B)They are isotopes.
• C)They all have the same atomic number.
• D)They all have 7 protons.
• E)They all have 7 electrons.

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