Bombardment of uranium- 235 with a neutron generates tellurium- 135, 3 neutrons, and
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Question

Quizplus · Accepted Answer

The balanced nuclear equation for the given information is:
U-235 + 1 neutron → Te-135 + 3 neutrons + Z
where Z is the unknown element. As the sum of atomic numbers on both sides of the equation must be equal, we can find the value of Z by subtracting the atomic numbers of U-235, neutron, and Te-135 from the total atomic numbers of the products (3 neutrons and Z):
Z = (3 neutrons + atomic number of Z) - (atomic number of U-235 + atomic number of neutron + atomic number of Te-135)
Z = 98
Therefore, the unknown element Z is zirconium-98, which is choice B.

Bombardment of Uranium- 235 with a Neutron Generates Tellurium- 135