మూస:ఆవర్తన పట్టిక
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Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hydrogen & alkali metals |
Alkaline earth metals | Pnictogens | Chalcogens | Halogens | Noble gases | ||||||||||||||
Period |
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2 | |||||||||||||||||||
3 | |||||||||||||||||||
4 | |||||||||||||||||||
5 | |||||||||||||||||||
6 | |||||||||||||||||||
7 | |||||||||||||||||||
Border shows natural occurrence of the element: | Primordial | From decay | Synthetic |
Standard atomic weight Ar, std(E)[1]
- Ca: 40.078 — Formal short value, rounded (no uncertainty)[2]
- Po: [209] — mass number of the most stable isotope
- ↑ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- ↑ Meija, J.; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.