THIS is the electron cloud.
It is impossible to know exactly where an electron is. Thus, the size of an electron cloud can be given only in terms of probability. Even then, the size of the electron cloud depends on how many electrons an atom possesses.
the size if its electron cloud
A proton has a positive charge, it is located in the electron cloud! ON cloud nine
mass i think
I need to know also
the one on the left
There are electrons surrounding it and it is an electron cloud. Electron clouds are undfinable.