Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified September 28 14:04 EDT 2024. Contains 376297 sequences.
License Agreements, Terms of Use, Privacy Policy