The Earth/matriX Thermodynamic Temperature Scale I reveals a centrosymmetry
of numerical values for the various points on the scale: absolute zero and the
melting/boiling/critical points of water. This pattern of centrosymmetry also occurs with
regard to selected elements as of these same gradation points. However, a second pattern
of translation symmetry appears with regard to other selected elements. This study
examines these two main patterns of symmetry on the Earth/matriX thermodynamic
temperature scale I, measured in energy-matter units [em], and the relationship of these
patterns to the various groups and families of the elements.