A199934 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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