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 bromine (br). check all that apply. z = 79, a = 196 z = 35, a = 79 a = 79, n = 44 z = 44, n = 44

Answer

Explanation:

Step1: Recall atomic - number property of bromine

Bromine has an atomic number (Z = 35) from the periodic table. Isotopes have the same atomic number but different mass numbers.

Step2: Analyze each option

  • For (Z = 79,A = 196), (Z=79) corresponds to gold (Au), not bromine.
  • For (Z = 35,A = 79), since (Z = 35) (atomic - number of bromine) and (A) (mass number) is 79, this could be an isotope of bromine.
  • For (A = 79,N = 44), first find (Z) using (A=Z + N). So (Z=A - N=79 - 44 = 35), which is the atomic - number of bromine, so this could be an isotope of bromine.
  • For (Z = 44,N = 44), (Z = 44) corresponds to ruthenium (Ru), not bromine.

Answer:

Z = 35, A = 79; A = 79, N = 44