A138096 Number of elements in the n-th column of the second extension of the Mendeleyev-Seaborg periodic table of elements.

7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 6, 6, 6, 6, 6, 7

Offset: 1

Author

Paul Curtz, May 03 2008

Keywords

• nonn
• easy
• fini
• full
• less

Comments

A variant of A134982, with one term "4" changing place because (relative to the first table) the two elements number 21 and 39 are moved over to the next column of d-metals, placed above element 71.

Crossrefs

Cf. A137583, A093907, A134984, A135559.