Consider an atom of osmium-190 (190Os). It has:
(A) 76 protons, 190 neutrons, 76 electrons
(B) 76 protons, 76 neutrons, 114 electrons
(C) 76 protons, 114 neutrons, 76 electrons
(D) 114 protons, 76 neutrons, 114 electrons
(E) 76 protons, 76 neutrons, 76 electrons
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