Question

use the periodic table to determine which of the following could be an isotope of bromine (br). check all that apply. z = 79, a = 196 z = 35, a = 79 a = 79, n = 44 z = 44, n = 44 done

Explanation:

Step1: Recall the atomic number of bromine

From the periodic table, the atomic number \(Z\) (number of protons) of bromine (\(Br\)) is \(35\).

Step2: Analyze each option

• Option \(Z = 79,A = 196\):

Since \(Z
eq35\), this is not an isotope of bromine.

• Option \(Z = 35,A = 79\):

Here \(Z = 35\) (atomic number of \(Br\)), and \(A\) (mass number) can vary for isotopes. So this could be an isotope of bromine.

• Option \(A = 79,N = 44\):

Using the formula \(A=Z + N\), we find \(Z=A - N=79 - 44 = 35\). Since \(Z = 35\), this could be an isotope of bromine.

• Option \(Z = 44,N = 44\):

Since \(Z
eq35\), this is not an isotope of bromine.

Answer:

B. \(Z = 35,A = 79\), C. \(A = 79,N = 44\)