A138228 Atomic numbers at the top of the 18 groups of the Mendeleyev-Seaborg table A138724.

1, 4, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 5, 6, 7, 8, 9, 2

Offset: 0

Author

Paul Curtz, May 05 2008

Keywords

• nonn
• fini
• full
• less

Comments

This refers to the following 18 elements at the top of their groups: H, Be, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, B, C, N, O, F, He.

Crossrefs

Cf. A138718, A135559.