Answer:
10 electrons
Explanation:
Normally you would assume the atom to be neutral, meaning the protons and electrons cancel each other, if nothing states the charge of the atom. So, there must be 10 electrons in order to cancel out the protons.
Hope this helped :]
An exoskeleton is the outer skeleton of an animal to protect them. An exoskelton is also called a shell.
Answer:
C.
It controls the entry and exit of substances.
