%I A138052
%S A138052 29,47,79,111
%N A138052 Atomic number of the penultimate transition metal (group 11) in the n-th 
               row of the periodic system of elements.
%C A138052 This refers to Cu=29, Ar=47, Au=79, and Rg=111.
%C A138052 The first differences are 18, 18, 32, indicating that there is a row 
               of Lanthanides between Au and Rg.
%H A138052 Anonymous, <a href="http://en.wikipedia.org/wiki/Periodic_table">Periodic 
               Table</a>, Wikipedia.
%Y A138052 Cf. A134984, A138724, A137575, A137846, A138040.
%Y A138052 Sequence in context: A104912 A104913 A102852 this_sequence A119891 A106754 
               A063642
%Y A138052 Adjacent sequences: A138049 A138050 A138051 this_sequence A138053 A138054 
               A138055
%K A138052 nonn,fini,full,less
%O A138052 4,1
%A A138052 Paul Curtz (bpcrtz(AT)free.fr), May 02 2008
%E A138052 Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 21 2009