XeNa / ReTa / RuTh

pairs of chemical element abbreviations
Xexenon
Nasodium
Rerhenium
Tatantalum
Ruruthenium
Ththorium
Lilithium
Amamericium
Gagallium
Beberyllium
Cocobalt
Dydysprosium
    1a  2a  3b  4b  5b  6b  7b      8       1b  2b  3a  4a  5a  6a  7a  0
    
    1                                                                   2
    H                                                                   He
    3   4                                           5   6   7   8   9   10
    Li  Be                                          B   C   N   O   F   Ne
    11  12                                          13  14  15  16  17  18
    Na  Mg                                          Al  Si  P   S   Cl  Ar
    19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36
    K   Ca  Sc  Ti  V   Cr  Mn  Fe  Co  Ni  Cu  Zn  Ga  Ge  As  Se  Br  Kr
    37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54
    Rb  Sr  Y   Zr  Nb  Mo  Tc  Ru  Rh  Pd  Ag  Cd  In  Sn  Sb  Te  I   Xe
    55  56  57  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86
    Cs  Ba  La  Hf  Ta  W   Re  Os  Ir  Pt  Au  Hg  Tl  Pb  Bi  Po  At  Rn
    87  88  89  104 105 106 107 108 109
    Fr  Ra  Ac  Rf  Ha  Sg  Ns  Hs  Mt
                58  59  60  61  62  63  64  65  66  67  68  69  70  71
                Ce  Pr  Nd  Pm  Sm  Eu  Gd  Tb  Dy  Ho  Er  Tm  Yb  Lu
                90  91  92  93  94  95  96  97  98  99  100 101 102 103
                Th  Pa  U   Np  Pu  Am  Cm  Bk  Cf  Es  Fm  Md  No  Lr

Thanks and a tip of the hat to Shawn McManus!

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