Question

Complete each nuclear fission reaction. What is A?

Answer 1

(235+1)-(90+(1*3)) = 143

Answer 2

Answer:

143

Explanation:

Thinking process:

The equation is balanced by balancing the charges. This gives:

235 + 1 = 90 + A + 3(1)

236 =    90 + A + 3

236  = 93 + A

     A = 236 - 93

         = 143

therefore, the value of A is 143