A138040 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A138040

Atomic number of the 2nd transition metal (group 4) in the n-th row of the periodic system of elements.

1

22, 40, 72, 104

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

OFFSET

4,1

COMMENTS

Refers to Titanium=22, Zirconium=40, Hafnium=72, Rutherfordium=104.

LINKS

Table of n, a(n) for n=4..7.

Wikipedia, Periodic table

CROSSREFS

Cf. A134984, A138724, A137575.

Sequence in context: A075217 A188156 A026061 * A154087 A063327 A066957

Adjacent sequences: A138037 A138038 A138039 * A138041 A138042 A138043

KEYWORD

nonn,fini,full,less

AUTHOR

Paul Curtz, May 02 2008

EXTENSIONS

Edited by R. J. Mathar, May 21 2009

STATUS

approved