Question

use the periodic table to complete this equation that represents nuclear fission processes.
a:
b:
c:

Explanation:

Step1: Calculate the mass number (A)

In a nuclear reaction, the sum of mass numbers on the left - hand side equals the sum of mass numbers on the right - hand side.
The mass number on the left - hand side: \(235 + 1=236\)
The mass number on the right - hand side: \(139+A + 3\times1\)
Set up the equation \(236=139 + A+3\), then \(A=236-(139 + 3)=94\)

Step2: Calculate the atomic number (B)

In a nuclear reaction, the sum of atomic numbers on the left - hand side equals the sum of atomic numbers on the right - hand side.
The atomic number on the left - hand side: \(92+0 = 92\)
The atomic number on the right - hand side: \(56 + B+3\times0\)
Set up the equation \(92=56 + B\), then \(B = 92-56=36\)

Step3: Identify the element (C)

Using the periodic table, an element with atomic number \(B = 36\) is Krypton (\(Kr\))

Answer:

A: \(94\)
B: \(36\)
C: \(Kr\)