Isotopes of sodium

From Freepedia

Sodium (Na)
Standard atomic mass: 22.98976928(2) u
Is considered a monoisotopic element.

Table

Z(p)	N(n)	isotopic mass (u)	nuclide symbol	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
11	7	18.02597(5)	Na-18
11	8	19.013877(13)	Na-19
11	9	20.007351(7)	Na-20
11	10	20.9976552(8)	Na-21
11	11	21.9944364(4)	Na-22
11	12	22.9897692809(29)	Na-23	1.0000
11	13	23.99096278(8)	Na-24
11	14	24.9899540(13)	Na-25
11	15	25.992633(6)	Na-26
11	16	26.994077(4)	Na-27
11	17	27.998938(14)	Na-28
11	18	29.002861(14)	Na-29
11	19	30.008976(27)	Na-30
11	20	31.01359(23)	Na-31
11	21	32.02047(38)	Na-32
11	22	33.02672(94)	Na-33
11	23	34.03517(96)#	Na-34
11	24	35.04249(102)#	Na-35
11	25	36.05148(102)#	Na-36
11	26	37.05934(103)#	Na-37

Notes

• Values marked # are not purely derived from experimental data, but at least partly from systematic trends.
• Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values from Ame2003 denote one standard deviation. Values from IUPAC are expanded uncertainties.

References

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Isotopic compositions and standard atomic masses from Atomic Weights of the Elements: Review 2000 (IUPAC Technical Report). Pure Appl. Chem., Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).

Isotopes of neon

Isotopes of sodium

Isotopes of magnesium

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