The atomic weight of an element is the weighted average of the masses of its naturally occurring isotopes. The atomic weight is typically listed on the periodic table. the atomic weights of neon (Ne) and magnesium (Mg) are:
- Neon (Ne): The atomic weight of neon is approximately 20.180 amu (atomic mass units).
- Magnesium (Mg): The atomic weight of magnesium is approximately 24.305 amu.
Please note that these values are based on the atomic weights reported in 2021 and may be subject to slight variations as more precise measurements are made in the future.