A138469 - OEIS

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A138469

Atomic numbers of p-block elements.

5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 31, 32, 33, 34, 35, 36, 49, 50, 51, 52, 53, 54, 81, 82, 83, 84, 85, 86, 113, 114, 115, 116, 117, 118

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OFFSET

1,1

COMMENTS

6 X 6 square of orbital p filling elements in Mendeleyev-Seaborg or Janet-Tarantola periodic table.

The sequence is considered full if we assume that all elements with 8 shells or more, i.e. of periods 8 and higher in Mendeleev's periodic table, have extremely unstable nuclei (extremely short half-life.)

The atomic numbers of elements in each block are

s-block: 1,2, 3,4, 11,12, 19,20, 37,38, 55,56, 87,88 for Mendeleev's periodic table (Cf. A160914)

s-block: 1,2, 3,4, 11,12, 19,20, 37,38, 55,56, 87,88, 119,120 for Janet's periodic table (Cf. A160914)

p-block: 5..10, 13..18, 31..36, 49..54, 81..86, 113..118 (Cf. A138469)

d-block: 21..30, 39..48, 71..80, 103..112 (Cf. A199934)

f-block: 57..70, 89..102 (Cf. A217923)

LINKS

Table of n, a(n) for n=1..36.

OEIS Wiki, Periodic table

CROSSREFS

Cf. A130517, A131603, A167268.

Cf. A160914 Atomic numbers of s-block elements.

Cf. A138469 Atomic numbers of p-block elements.

Cf. A199934 Atomic numbers of d-block elements.

Cf. A217923 Atomic numbers of f-block elements.

Sequence in context: A182306 A023379 A003667 * A089362 A333532 A121537

Adjacent sequences: A138466 A138467 A138468 * A138470 A138471 A138472

KEYWORD

nonn,tabf,fini,full

AUTHOR

Paul Curtz, May 09 2008

EXTENSIONS

Edited by Daniel Forgues, May 15 2011

Ref. to A160914 and A199934 inserted by Jean-François Alcover, Oct 15 2012

STATUS

approved