Answer:
x-rays
Explanation:
because x-rays have the highest nd it can penetrate through human body and much other things
Answer:
C
Explanation:
Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, known as fission products.
I would say that descriptive investigations aren't repeatable because it means that you are only describing something - you ask certain question about something, but do not form a hypothesis at that point yet. So it would be a waste of time to simply ask the same questions over and over again with no hypothesis to prove, which is why these types of investigations cannot be repeated.
Answer: lithium- 3 protons, 3 electrons, 3 neutrons
Oxygen- nucleon no. 16, Atomic no. 8, 8 protons, overall charge (-2)
Sorry I don't the others. Hope this helps
