There's growing evidence ...Fentanyl (or hydromorphone) have a better side effect profile than morphine (remember the vaunted vasodilation is only a side effect) thereby making fentanyl a better choice..
The subatomic particles in the nucleus of a carbon atom are protons and neutrons. The atomic nucleus contains protons and usually neutrons (except for hydrogen-1 (protium) atoms. The number of protons is an element's atomic number and is the same for all atoms of an element. Carbon has atomic number #6#. So all atoms of carbon have #6# protons in their atomic nuclei.
The atoms are made up of three basic sub-atomic particles. 1  Electron - Negatively charged particle present outside the nucleus of an atom. 2  Proton - Protons are positively charged and are present inside the nucleus.  Neutron - Neutrons are neutrally charged particles, present within the nucleus of an atom.