2. Chemistry
Isotopes
Multiple Choice
Multiple ChoiceThe atomic number of nitrogen is 7. Nitrogen-15 has a greater mass number than nitrogen-14 because the atomic nucleus of nitrogen-15 contains ________.
a) 7 neutrons.
b) 8 neutrons.
c) 8 protons.
d) 15 protons.
A
7 neutrons.
B
8 neutrons.
C
8 protons.
D
15 protons.
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