Atomic nucleus-The atomic nucleus is the small dense region consisting of protons and neutrons at the center of an atom discovered in 1911 by EARNEST RUTHERFORD. Atoms are made up of a positively charged nucleus surrounded by a cloud of negatively charged atoms. Nuclei are very dense and extremely small. They contain more than 999/ of the mass of an atom and are 10000 times smaller than an atom.
My question is what is the role of the nucleus in an atom? Does the nucleus of an atom move?