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.
Neon is the second lightest noble gas, after helium, and it has an atomic number of 10. On the periodic table, it is identified with the symbol Ne. The noble gases were recognized in the late 1800s, when scientists realized that an entire class of gases was missing from the periodic table of elements.