IUPAC group | 1a | 2 | —b | 3c | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mendeleev (I–VIII) | I | II | III | IV | V | VI | VII | VIII | I | II | III | IV | V | VI | VII | d | |||
CAS (US, A-B-A) | IA | IIA | IIIB | IVB | VB | VIB | VIIB | VIIIB | IB | IIB | IIIA | IVA | VA | VIA | VIIA | VIIIA | |||
Old IUPAC (Europe, A-B) | IA | IIA | IIIA | IVA | VA | VIA | VIIA | VIII | IB | IIB | IIIB | IVB | VB | VIB | VIIB | 0 | |||
Trivial namer | H and alkali metals | alkaline earth metals | triels | tetrels | pnictogens | chalcogens | halogens | noble gases | |||||||||||
Name by elementr | lithium group | beryllium group | scandium group | titanium group | vanadium group | chromium group | manganese group | iron group | cobalt group | nickel group | copper group | zinc group | boron group | carbon group | nitrogen group | oxygen group | fluorine group | helium or neon group | |
Period 1 | H | He | |||||||||||||||||
Period 2 | Li | Be | B | C | N | O | F | Ne | |||||||||||
Period 3 | Na | Mg | Al | Si | P | S | Cl | Ar | |||||||||||
Period 4 | K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr | |
Period 5 | Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe | |
Period 6 | Cs | Ba | La–Yb | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
Period 7 | Fr | Ra | Ac–No | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |
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