(TXT) Shell: p-block
       
        .                                                  ..
        .. ..                               B  C  N  O  F  Ne
        .. ..                               Al Si P  S  Cl Ar
        .  .. .. .. .  .. .. .. .. .. .. .. Ga Ge As Se Br Kr
        .. .. .  .. .. .. .. .. .. .. .. .. In Sn Sb Te I  Xe
        .. .. .. .. .. .  .. .. .. .. .. .. Tl Pb Bi Po At Rn
        .. .. .. .. .. .. .. .. .. .. .. .. Nh Fl Mc Lv Ts Og
                                                             
              .. .. .. .. .. .. .. .. .. .. .. .. .. ..      
              .. .. .  .. .. .. .. .. .. .. .. .. .. ..      
       
       The p-block consists elements in Groups 13 to 18 but not Helium. The 
       valence electrons of these elements are in the p-shell. This 
       dumb-bell shaped shell holds at most 6 electrons, and has an 
       azimuthal quantum number of 1. The "p" stands for "principal".
       
 (DIR)   5 B  Boron
 (DIR)   6 C  Carbon
 (DIR)   7 N  Nitrogen
 (DIR)   8 O  Oxygen
 (DIR)   9 F  Fluorine
 (DIR)  10 Ne Neon
 (DIR)  13 Al Aluminum
 (DIR)  14 Si Silicon
 (DIR)  15 P  Phosphorus
 (DIR)  16 S  Sulfur
 (DIR)  17 Cl Chlorine
 (DIR)  18 Ar Argon
 (DIR)  31 Ga Gallium
 (DIR)  32 Ge Germanium
 (DIR)  33 As Arsenic
 (DIR)  34 Se Selenium
 (DIR)  35 Br Bromine
 (DIR)  36 Kr Krypton
 (DIR)  49 In Indium
 (DIR)  50 Sn Tin
 (DIR)  51 Sb Antimony
 (DIR)  52 Te Tellurium
 (DIR)  53 I  Iodine
 (DIR)  54 Xe Xenon
 (DIR)  81 Tl Thallium
 (DIR)  82 Pb Lead
 (DIR)  83 Bi Bismuth
 (DIR)  84 Po Polonium
 (DIR)  85 At Astatine
 (DIR)  86 Rn Radon
 (DIR) 113 Nh Nihonium
 (DIR) 114 Fl Flerovium
 (DIR) 115 Mc Moscovium
 (DIR) 116 Lv Livermorium
 (DIR) 117 Ts Tennessine
 (DIR) 118 Og Oganesson
       
 (DIR) All Shells