Neon Neon is a chemical element; it has symbol Ne and atomic number 10. It is the second noble gas in the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with approximately two-thirds the density of ...

(₁₀Ne) possesses three stable

isotopes Isotopes are distinct nuclear species (or ''nuclides'') of the same chemical element. They have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), but ...

: , , and . In addition, 17 radioactive isotopes have been discovered, ranging from to , all short-lived. The longest-lived is with a half-life of . All others are under a minute, most under a second. The least stable is with a half-life of (). See

isotopes of carbon Carbon (6C) has 14 known isotopes, from to as well as , of which only and are stable. The longest-lived radioisotope is , with a half-life of years. This is also the only carbon radioisotope found in nature, as trace quantities are formed ...

for notes about the measurement. Light radioactive neon isotopes usually decay to

fluorine Fluorine is a chemical element; it has Chemical symbol, symbol F and atomic number 9. It is the lightest halogen and exists at Standard temperature and pressure, standard conditions as pale yellow Diatomic molecule, diatomic gas. Fluorine is extre ...

oxygen Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...

, while heavier ones decay to

sodium Sodium is a chemical element; it has Symbol (chemistry), symbol Na (from Neo-Latin ) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 element, group 1 of the peri ...

List of isotopes

, -id=Neon-15 , , style="text-align:right" , 10 , style="text-align:right" , 5 , ,
[] , proton emission, 2p , , (3/2−) , , , -id=Neon-16 , , style="text-align:right" , 10 , style="text-align:right" , 6 , , >
[< ] , 2p , , 0+ , , , -id=Neon-17 , rowspan=4, Has 2

halo HALO, halo, halos or haloes may refer to: Most common meanings * Halo (optical phenomenon) * Halo (religious iconography), a ring of light around the image of a head * ''Halo'' (franchise), a sci-fi video game series (2001–2021) Arts and en ...

protons. , rowspan=4 style="text-align:right" , 10 , rowspan=4 style="text-align:right" , 7 , rowspan=4, , rowspan=4, , β⁺p () , , rowspan=4, 1/2− , rowspan=4, , rowspan=4, , - , β⁺α () , , - , β⁺ () , , - , β⁺pα () , , -id=Neon-18 , , style="text-align:right" , 10 , style="text-align:right" , 8 , , , β⁺ , , 0+ , , , -id=Neon-19 , , style="text-align:right" , 10 , style="text-align:right" , 9 , , , β⁺ , , 1/2+ , , , -id=Neon-20 , , style="text-align:right" , 10 , style="text-align:right" , 10 , , colspan=3 align=center, Stable , 0+ , 0.9048(3) , ref name="Isotopic Composition of Elements"> , -id=Neon-21 , , style="text-align:right" , 10 , style="text-align:right" , 11 , , colspan=3 align=center, Stable , 3/2+ , , ref name="Isotopic Composition of Elements" /> , -id=Neon-22 , , style="text-align:right" , 10 , style="text-align:right" , 12 , , colspan=3 align=center, Stable , 0+ , , ref name="Isotopic Composition of Elements" /> , -id=Neon-23 , , style="text-align:right" , 10 , style="text-align:right" , 13 , , , β⁻ , , 5/2+ , , , -id=Neon-24 , , style="text-align:right" , 10 , style="text-align:right" , 14 , , , β⁻ , , 0+ , , , -id=Neon-25 , , style="text-align:right" , 10 , style="text-align:right" , 15 , , , β⁻ , , 1/2+ , , , -id=Neon-26 , rowspan=2, , rowspan=2 style="text-align:right" , 10 , rowspan=2 style="text-align:right" , 16 , rowspan=2, , rowspan=2, , β⁻ () , , rowspan=2, 0+ , rowspan=2, , rowspan=2, , - , β⁻n () , , -id=Neon-27 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 17 , rowspan=3, , rowspan=3, , β⁻ () , , rowspan=3, (3/2+) , rowspan=3, , rowspan=3, , - , β⁻n () , , - , β⁻2n ?Decay mode shown is energetically allowed, but has not been experimentally observed to occur in this nuclide. , ? , -id=Neon-28 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 18 , rowspan=3, , rowspan=3, , β⁻ () , , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n () , , - , β⁻2n () , , -id=Neon-29 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 19 , rowspan=3, , rowspan=3, , β⁻ () , , rowspan=3, (3/2−) , rowspan=3, , rowspan=3, , - , β⁻n () , , - , β⁻2n () , , -id=Neon-30 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 20 , rowspan=3, , rowspan=3, , β⁻ () , , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n () , , - , β⁻2n () , , -id=Neon-31 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 21 , rowspan=3, , rowspan=3, , β⁻ , , rowspan=3, (3/2−) , rowspan=3, , rowspan=3, , - , β⁻n ? , ? , - , β⁻2n ? , ? , -id=Neon-32 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 22 , rowspan=3, # , rowspan=3, , β⁻ , , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻n ? , ? , - , β⁻2n ? , ? , -id=Neon-34 , rowspan=3, , rowspan=3 style="text-align:right" , 10 , rowspan=3 style="text-align:right" , 24 , rowspan=3, # , rowspan=3, # , β⁻ ? , , rowspan=3, 0+ , rowspan=3, , rowspan=3, , - , β⁻2n ? , ? , - , β⁻n ? , ? , - * The isotopic composition refers to that in air.

References

{{Navbox element isotopes Neon

List of isotopes

See also

References