False
Actual yield in a reaction is almost always less than the theoretical yield, primarily because losses of the substances involved may occur anywhere in an experiment. Otherwise, there can be so many possibilities that can be reasoned out depending on the reaction.
The science is based on the whole data you can get and make adjustments only from data. While pseudoscience based on part of the data and get the results that they want.
i dont think their are a exact number
The subatomic particle James Chadwick discover is no other than NEUTRON. Neutron is a subatomic particle discovered by James Chadwick, its symbol n or n0 and it has no net electric charge. When we compare its mass to that of proton, the neutrons mass is slightly greater than the proton.