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A080915 Number of electrons in outermost electron shell (valence electrons) in chemical element number n. 2
1, 2, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 1, 1, 2, 1, 1, 10, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..97.

C. Heilman, The Pictorial Periodic Table

EXAMPLE

Example: element 46Pd has ten electrons in its N-shell, none in its O-shell.

CROSSREFS

Cf. A080916.

Sequence in context: A236858 A220661 A137846 * A239484 A058714 A057045

Adjacent sequences:  A080912 A080913 A080914 * A080916 A080917 A080918

KEYWORD

nonn

AUTHOR

Ralf Stephan, Feb 23 2003

STATUS

approved

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Last modified February 17 18:14 EST 2020. Contains 332005 sequences. (Running on oeis4.)