Atomic Mass and Nuclear Binding Energy for Br-73 (Bromine)
Abstract
The mass of bromine in the oceans is about one three-hundredth that of chlorine. At standard conditions for temperature and pressure it is a liquid; the only other element that is liquid under these conditions is mercury. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Br-121 (Bromine, atomic number Z = 35, mass number A = 121).
Calculate the average atomic mass of bromine. One isotope of bromine has an atomic mass of 78.92amu and a relative abundance of 50.69%. The other major isotope of bromine has an atomic mass of 80.92amu and a relative abundance of 49.31%. Click to see full answer. The mass spectrum of bromine consists of three peaks: Mass(amu)→ Peaks Relative Size 157.836 → 0.2569 159.834 → 0.4999 161.832 → 0.2431 a)What is the isotopic composition of each peak? B)What is the atomic mass of each isotope? C)Determine the average mass of Br2 molecule. Since molecules of bromine have only two atoms, the spectrum on the left will come as a surprise if a single atomic mass of 80 amu is assumed for Br. The five peaks in this spectrum demonstrate clearly that natural bromine consists of a nearly 50:50 mixture of isotopes having atomic masses of 79 and 81 amu respectively.
This document is part of the Supplement containing the complete sets of data of Subvolume A `Nuclei with Z = 1 - 54' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms'. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Br-73 (Bromine, atomic number Z = 35, mass number A = 73).
Properties Of Bromine
- atomic mass;
- mass excess;
- nuclear binding energy;
- nucleon separation energy;
- Q-value;
- nucleon residual interaction parameter