The two nuclei are Krypton-89 and Barium- 144
Explanation:
The splitting nuclei is a Uranium-235:
U:
mass number = 235
atomic number = 92
We can write the atom as ²³⁵₉₂U
From the key, a neutron particle collides with the Uranium nuclei. The neutron is represented as:
¹₀n
Writing the expression on the left hand side:
²³⁵₉₂U + ¹₀n
In a fission reaction, a heavy nucleus disintegrates into 2 lighter nuclei and several neutrons with the release of a large amount of energy.
NOTE: In every nuclear reaction, the mass number and atomic number is always conserved.
Problem: To find the unknown nuclei on the right hand side;
Known:
3 neutrons;
²³⁵₉₂U + ¹₀n → 3 ¹₀n + unknown nuclei
To balance the product side,
mass number = (235+1) - (3x1) = 233
Atomic number = 92 -3 = 89
from the options given, Krypton and plutonium will fit this:
Given information of Kr:
atomic number = 36
neutron number = 53
Mass number = atomic number + neutron number = 89
Given information of Ba:
atomic number = 56
neutron number = 88
mass number = 56+88 = 144
Complete equation:
²³⁵₉₂U + ¹₀n → 3 ¹₀n + ¹⁴⁴₅₆Ba + ⁸⁹₃₆Kr
Learn more:
nuclear equation brainly.com/question/10094982
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