\name{atomprop} \alias{atomprop} \docType{data} \title{ Standard atomic weights } \description{ Data frame with atom names, symbols, standard atomic weights, group number and period number. } \usage{data(atomprop)} \format{ The format is a data frame with 117 rows and 6 columns. } \source{ Columns 1 to 4 from: http://iupac.org/publications/pac/78/11/2051/ Columns 5 to 6 from: http://en.wikipedia.org/wiki/List_of_elements } \references{ Pure Appl. Chem., 2006, Vol. 78, No. 11, pp. 2051-2066 } \examples{ data(atomprop) atomprop[1:4,] } \keyword{datasets}