Challenges to Comprehension Implied by the Logo of Laetus in Praesens
Laetus in Praesens
1982

Alternative Presentation of Periodic Table of Elements, Highlighting Chemical Groups

Functional Classification in an Integrative Matrix of Human Preoccupations (Figure 4)

- / -

See commentary in Functional Classification in an Integrative Matrix of Human Preoccupations

("lanthanides" and "actinides" not shown)

                         
                           
    7a1 7a2 6d1                  
  a Fr Ra Ac                  
    87 88 89 104                
    5d10 5d10 6p1 6p2 6p3 6p4 5p5       6p6  
  b Au Hg Tl Pb Bi Po At       Rn  
    79 80 81 82 83 84 85       86  
    6a1 6a2 5d1 5d2 5d3 5d4 5d5 5d6 5d7 5d9    
  a Cs Ba La Hf Ta W Re Os Ir Pt    
    58 56 57 72 73 74 75 76 77 78    
    4d10 4d10 5p1 5p2 5p3 5p4 5p5       5p6  
  b Ag Cd In Sn Sb Te I       Xe  
    47 48 49 50 51 52 53       54  
    5a1 5a2 4d1 4d2 4d4 4d5 4d5 4d7 4d9 4d10    
  a Rb Sr Y Zr Nb Mo Tc Ru Rh Pd    
    37 38 39 40 41 42 43 44 45 46    
    3d10 3d10 4p1 4p2 4p3 4p4 4p5       4p6  
  b Cu Zn Ga Ge As Se Br       Kr  
    29 30 31 32 33 34 35       36  
    4a1 4a2 3d1 3d2 3d3 3d5 3d5 3d6 3d7 3d8    
  a K Ca Sc Ti V Cr Mn Fe Co Ni    
    19 20 21 22 23 24 25 26 27 28    
    3a1 3a2 3p1 3p2 3p3 3p4 3p5       3p5  
    Na Mg Al Si P S Cl       Ar  
    11 12 13 14 15 16 17       18  
    2a1 2a2 2p1 2p2 2p3 2p4 2p5       2p5  
    Li Be B C N O F       Ne  
    3 4 5 6 7 8 9       10  
    1a1 1a2                 1a2  
    H He                 He  
    1 2                 2  
                         
Chemical

groups

   1 2 3 4 5 6 7   8   0  
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