active transport requires the usage of energy in the form of ATP to  move something against is concentration gradient. Facilitated  diffusion is a form of simple diffusion i â¦ n that the substance moves  along with its concentration gradient, but it requires the use of a  transport protein.
Quick Answer. The atomic mass of the element neon is 20.18 amu, or atomic mass units. This number, which appears on the periodic table underneath the chemical symbol for neon, Ne, represents the weighted average of the isotopic masses of neon's isotopes based on their abundance in nature. Continue Reading.
The term nucleon refers to the particles found in the nucleus of an atom, namely protons and neutrons. A single hydrogen atom (one proton plus one electron) has a mass of 1.007825 amu.A single neutron has a mass of 1.008665 amu. Note that amu stands for atomic mass unit and is sometimes abbreviated with the symbol u.he total mass of the individual nucleons in an atom is always greater than the actual measured mass of the atom. The difference is called the mass defect. The mass defect of an atom corresponds to an amount of energy called the binding energy.