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The diagram of an atom below shows two regions, the nucleus (1) and the area surrounding the nucleus (2).
An atom has 7 protons, 7 electrons, and 8 neutrons. What is its atomic mass?
Given the isotope of Oxygen-18, how many neutrons does this isotope have?
Given the isotope of Carbon-12, how many neutrons does it contain?
An atom of Fluorine-19 (F-19) has 9 protons. Determine the number of neutrons in this atom.
Which particles have almost the same mass?
Which of the following represents a pair of isotopes?
If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom?