Phase 5: Construction Administration. Finally, once you have selected a contractor and construction is under way, we move into the fifth phase of the architectural design process â construction administration.
The neutron is a subatomic particle, symbol n or n0 , with no net electric charge and a mass slightly larger than that of a proton. Protons and neutrons constitute the nuclei of atoms.
What if there are more neutrons than the generalized ones? They are called isotopes. For example, a hydrogen atom has one proton and one electron (no neutrons). One isotope of hydrogen called deutorium has one proton , one electron and one neutron. Another isotope of hydrogen called tritium has one proton, two neutrons and one electron. Tritium is radioactive.