Question

What is the missing number in the nuclear reaction shown below?

+
233
92
4
2
He +
?
90
Th
Answer here
SUBMIT

Answer 1

`\boxed{299}`

Step-by-step explanation:

In this reaction, Sum of Atomic Masses of Left side = Sum of Atomic Masses of right side

Let the atomic mass of Thorium be x

So,

233 = 4 + x

Subtracting 4 to both sides

x = 233-4

x = 229