Neon Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypt ...

(₁₀Ne) possesses three stable

isotopes Isotopes are two or more types of atoms that 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), and that differ in nucleon numbers ( mass numbers ...

: , , 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 15 known isotopes, from to , of which and are stable. The longest-lived radioisotope is , with a half-life of years. This is also the only carbon radioisotope found in nature—trace quantities are formed cosmogenically by t ...

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

fluorine Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reactiv ...

oxygen Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements ...

, while heavier ones decay to

sodium Sodium is a chemical element with the symbol Na (from Latin ''natrium'') and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable ...

List of isotopes

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

halo Halo, halos or haloes usually refer to: * Halo (optical phenomenon) * Halo (religious iconography), a ring of light around the image of a head HALO, halo, halos or haloes may also refer to: Arts and entertainment Video games * ''Halo'' (franch ...

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 () , , - , , style="text-align:right" , 10 , style="text-align:right" , 8 , , , β⁺ , , 0+ , , , - , , style="text-align:right" , 10 , style="text-align:right" , 9 , , , β⁺ , , 1/2+ , , , - , , 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"> , - , , style="text-align:right" , 10 , style="text-align:right" , 11 , , colspan=3 align=center, Stable , 3/2+ , , ref name="Isotopic Composition of Elements" /> , - , , style="text-align:right" , 10 , style="text-align:right" , 12 , , colspan=3 align=center, Stable , 0+ , , ref name="Isotopic Composition of Elements" /> , - , , style="text-align:right" , 10 , style="text-align:right" , 13 , , , β⁻ , , 5/2+ , , , - , , style="text-align:right" , 10 , style="text-align:right" , 14 , , , β⁻ , , 0+ , , , - , , style="text-align:right" , 10 , style="text-align:right" , 15 , , , β⁻ , , 1/2+ , , , - , 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 () , , - , 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. , ? , - , 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 () , , - , 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 () , , - , 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 () , , - , 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 ? , ? , - , 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 ? , ? , - , ?This isotope has not yet been observed; given data is inferred or estimated from periodic trends. , style="text-align:right" , 10 , style="text-align:right" , 23 , # , < , n ? , , 7/2−# , , , - , 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