The last one is 54aquare units
Answer:
X=-4
Step-by-step explanation:
In the attached file
A gamma ray by definition, has a zero charge and a zero mass.
So when it is released it does not change the mass or nuclear charge of the parent material.
But it does involve the release of energy like all radioactive processes.
So the statement is True.
It goes in order
470,000
520,000
390,000,000