A radioactive nuclide is used to detect eye tumors. An atom of this radionuclide contains 15 protons, 15 electrons, and 17 neutrons. Which is symbol of this radionuclide?
Superscript 32 subscript 17 upper P
Superscript 17 subscript 15 upper P.
Superscript 30 subscript 15 upper P.
Superscript 32 subscript 15 upper P.
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