229k views
2 votes
What is missing in the following nuclear equation?
99 TC → ? + 99 Ru
43
44

1 Answer

3 votes

Answer: A beta particle

Step-by-step explanation:

A beta particle is simply a high energy electron that is emitted from the nucleus. It DOES NOT affect the mass number of radioactive element TC, but affects the ATOMIC NUMBER by increasing it by 1 in Ru.

Thus mass number 99 remain the same in TC and Ru, but Atomic number increases from 43 to 44 due to beta decay

So, a beta particle is missing

User Isdal
by
6.0k points