use the periodic table to determine which of the following could be an isotope of bromine (br). check all…

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 use the periodic table to determine which of the following could be an isotope of indium (in). check all that apply. z = 49, a = 113 n = 64, z = 49 n = 61, a = 113 a = 110, n = 49

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 use the periodic table to determine which of the following could be an isotope of indium (in). check all that apply. z = 49, a = 113 n = 64, z = 49 n = 61, a = 113 a = 110, n = 49

Answer

Explanation:

Step1: Recall isotope - definition

Isotopes have the same atomic number (Z). For bromine (Br), atomic number $Z = 35$, for indium (In), atomic number $Z=49$. Also, $A = N+Z$, where $A$ is the mass - number and $N$ is the number of neutrons.

Step2: Check bromine isotopes

  • For $Z = 79,A = 196$, this is gold (Au) since $Z = 79$. Not a bromine isotope.
  • For $Z = 35,A = 79$, since $Z = 35$ (atomic number of bromine), this could be a bromine isotope.
  • Given $A = 79,N = 44$, we find $Z=A - N=79 - 44 = 35$, so it could be a bromine isotope.
  • For $Z = 44,N = 44$, this is ruthenium (Ru) since $Z = 44$. Not a bromine isotope.

Step3: Check indium isotopes

  • For $Z = 49,A = 113$, since $Z = 49$ (atomic number of indium), this could be an indium isotope.
  • For $N = 64,Z = 49$, since $Z = 49$, this could be an indium isotope.
  • Given $N = 61,A = 113$, we find $Z=A - N=113 - 61 = 52$ (tellurium, Te), not an indium isotope.
  • Given $A = 110,N = 49$, we find $Z=A - N=110 - 49 = 61$ (promethium, Pm), not an indium isotope.

Answer:

For bromine: $Z = 35,A = 79$; $A = 79,N = 44$ For indium: $Z = 49,A = 113$; $N = 64,Z = 49$