Nitrogen Has Seven Protons,seven Neutrons,and Seven Electrons

Question

Nitrogen has seven protons,seven neutrons,and seven electrons.What is the atomic mass of nitrogen?
A) 0
B) 7
C) 14
D) 21

Accepted Answer

The atomic mass of an element is equal to the sum of its protons and neutrons. In this case, nitrogen has 7 protons and 7 neutrons, so its atomic mass is 14. Therefore, the correct answer is C. Option A is incorrect because atomic mass cannot be 0 as protons and neutrons have mass. Option B is incorrect because atomic mass is the sum of protons and neutrons, not just protons. Option D is incorrect because it is the sum of protons, neutrons, and electrons which does not give us the atomic mass of an element.