Which element has 16 protons in its nucleus?
A nitride ion has 7 protons, 8 neutrons, and 10 electrons. What is the overall charge on this ion?
Which two particles are found in the nucleus of an atom?
An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?
A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What particles is the scientist studying?
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