SCREEN 1
PRINT "   PERIODIC TABLE OF ELEMENTS"
PRINT "1                                 2"
PRINT "H                                 He"
PRINT "3 4                      5 6 7 8 910"
PRINT "LiBe                     B C N O FNe"
PRINT "1112                    131415161718"
PRINT "NaMg                    AlSi P SClAr"
PRINT "192021222324252627282930313233343536"
PRINT " KCaScTi VCrMnFeCoNiCuZnGaGeAsSeBrKr"
PRINT "373839404142434445464748495051525354"
PRINT "RbSr YZrNbMoTcRuRhPdAgCdInSnSbTe IXe"
PRINT "555671727374757677787980818283848586"
PRINT "CsBaLuHfTa WReOsIrPtAuHgTlPbBiPoAtRn"
PRINT "8788103"
PRINT "FrRaLr"
PRINT "    5758596061626364656667686970"
PRINT "    LaCePrNdPmSmEuGdTbDyHoErTmYb"
PRINT "    8990919293949596979899100101102"
PRINT "    AcThPa UNpPuAmCmBkCfEsFm Md No"