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A138469 Atomic numbers of p-block elements. 5
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 9 17:12 EST 2022. Contains 358702 sequences. (Running on oeis4.)