unsur 138SKRIPSI ANALISIS YURIDIS PEMBUKTIAN UNSUR PASAL DAKWAAN PENUNTUT UMUMName of the isotope: Cesium-138; Cs-138 Symbol: 138 Cs or 138 55 Cs Mass number A: 138 (= number of nucleons) Atomic number Z: 55 (= number of protons) Neutrons N: 83 Isotopic