Nuklida · radioaktif
Bromin-77 (⁷⁷Br)
Bromin-77 (⁷⁷Br) adalah isotop radioaktif bromin dengan 35 proton dan 42 neutron (nomor massa 77). Waktu paruhnya 57,04 jam (± 0,12 jam), meluruh terutama lewat peluruhan beta plus (β⁺).
Data nuklida
- Unsur
- Bromin (Br, Z = 35)
- Nomor massa (A)
- 77
- Proton (Z)
- 35
- Neutron (N)
- 42
- Massa atom
- 76.921379193 ± 0.000003017 u
- Waktu paruh
- 57,04 jam (± 0,12 jam)
- Mode peluruhan
- Peluruhan beta plus (β⁺) ( 100 %)
- Inti anak
- Selenium-77 (⁷⁷Se)
- Tahun penemuan
- 1948
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop bromin
- 77Br (with a half-life of 57 h) is used to label radiopharmaceuticals that bind to estrogen receptors for tumor imaging. 75Br (with a half-life of 97 min) is being used with positron emission tomography (PET) imaging.
- 79Br is used in the proton cyclotron to produce 77Kr, which decays to 77Br via the reaction 79Br (p, 3n) 77Kr, which decays into 77Br.
Isotop bromin lainnya
⁶⁵Br, ⁶⁶Br, ⁶⁷Br, ⁶⁸Br, ⁶⁹Br, ⁷⁰Br, ⁷¹Br, ⁷²Br, ⁷³Br, ⁷⁴Br, ⁷⁵Br, ⁷⁶Br, ⁷⁸Br, ⁷⁹Br, ⁸⁰Br, ⁸¹Br, ⁸²Br, ⁸³Br, ⁸⁴Br, ⁸⁵Br, ⁸⁶Br, ⁸⁷Br, ⁸⁸Br, ⁸⁹Br, ⁹⁰Br, ⁹¹Br, ⁹²Br, ⁹³Br, ⁹⁴Br, ⁹⁵Br, ⁹⁶Br, ⁹⁷Br, ⁹⁸Br