A199934 Extended d-block elements for Janet table.

21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 347

Offset

1,1

Comments

After the s-block (A160914) and the p-block (A138469), we present the d-block (4*10) elements for the Janet table, in A167268. Janet published his table in a 1928 book (see below), 24 of planche 7, in which he also introduced the s, p, d, f blocks (called nappes 1, 2, 3, 4).

a(n) also comes from one of the two classical Mendeleyev-Moseley-Seaborg periodic table(s) i.e. (see A138096):

1 2

3 4 5 to 10

11 12 13 to 18

19 20 21 to 30 31 to 36

37 38 39 to 48 49 to 54

55 56 57 to 70 71 to 80 81 to 86

87 88 89 to 102 103 to 112 113 to 118.

(The second is in A134982).

References

Charles Janet, Essais de classification hélicoidale des éléments chimiques, April 1928, N3, Beauvais, 2 + 104 pages, 4 leaflets (4 to 7).

Links

Table of n, a(n) for n=1..71.

Wikipedia, The Janet periodic table

Crossrefs

Sequence in context: A165842 A183738 A004510 * A335558 A141439 A323419

Adjacent sequences: A199931 A199932 A199933 * A199935 A199936 A199937

Keyword

nonn,tabf

Author

Paul Curtz, Nov 12 2011

Status

approved