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Chapter 3: Problem 8

Bromine (Br) has two abundant isotopes, one with 44 neutrons and the other with 46 neutrons. Give the full atomic symbols for both isotopes.

Short Answer

Expert verified
The full atomic symbols for both Bromine isotopes are: 1. Isotope with 44 neutrons: \(_{35}^{79}\textrm{Br}\) 2. Isotope with 46 neutrons: \(_{35}^{81}\textrm{Br}\)

Step by step solution

01

Find the Atomic Number of Bromine

To find the atomic number (Z) of Bromine, we can look it up on the periodic table. Bromine (Br) has an atomic number Z of 35, meaning it has 35 protons.
02

Find the Mass Number for Both Isotopes

To find the mass number (A) for both isotopes, we add the number of neutrons to the atomic number (Z): 1. Isotope with 44 neutrons: \( A = Z + N = 35 + 44 = 79 \) 2. Isotope with 46 neutrons: \( A = Z + N = 35 + 46 = 81 \)
03

Write Full Atomic Symbols for Both Isotopes

Now that we have the mass numbers (A) and atomic number (Z) for both isotopes, we can write their full atomic symbols using the format: \(_{Z}^{A}\textrm{Element Symbol} \) 1. Isotope with 44 neutrons: \(_{35}^{79}\textrm{Br}\) 2. Isotope with 46 neutrons: \(_{35}^{81}\textrm{Br}\)

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