Problem: There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br2 molecules, and the mass of a Br2 molecule is the sum of the masses of the two atoms in the molecule. The mass spectrum of Br2 consists of three peaks: Mass (amu) Relative Size157.8360.2569159.8340.4999161.8320.2431Determine the average atomic mass of a bromine atom.
FREE Expert Solution
79Br81Br : mass = 159.834 amu
79Br79Br: mass = 157.836 amu
81Br81Br: mass = 161.832 amu
Problem Details
There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br2 molecules, and the mass of a Br2 molecule is the sum of the masses of the two atoms in the molecule. The mass spectrum of Br2 consists of three peaks:
| Mass (amu) | Relative Size |
| 157.836 | 0.2569 |
| 159.834 | 0.4999 |
| 161.832 | 0.2431 |
Determine the average atomic mass of a bromine atom.
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