The correct set of element with electrons and protons has been Indium.
The atom has been the smallest unit of matter that has been consisted of electrons, protons, and neutrons as subatomic particles.
The neutrons are the neutral particles, while protons are the positively charged subatomic particles. The neutrons and protons have consisted in the nucleus that have been positively charged with the presence of protons.
The electrons have been the negatively charged particles that have been revolving around the nucleus. In an atom, the number of protons and electrons are equal, thus the atomic mass has been the mass of neutrons.
In the given elements the number of protons and electrons are equal for Fluorine and Indium. The fluorine has been consisted of 9 electrons and protons. Thus, the correct set of element with electrons and protons has been Indium.
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