The nucleus of a nitrogen atom contains 7 neutrons and 7 protons. Which of the following is a correct statement concerning nitrogen?
A) The nitrogen atom has a mass number of 7 and an atomic number of 14.
B) The nitrogen atom has a mass number of 14 and an atomic number of 7.
C) The nitrogen atom has a mass number of 14 and an atomic number of 14.
D) The nitrogen atom has a mass number of 7 and an atomic number of 21.
E) The nitrogen atom has a mass number of 14 and an atomic number of 21.
Correct Answer:
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