elem,Tc_50 Li,1135 Be,1445 B,906 C,40 N,123 O,179 F,726 Ne,9.1 Na,953 Mg,1346 Al,1641 Si,1346 P,1226 S,655 Cl,940 Ar,47 K,1001 Ca,1505 Sc,1647 Ti,1573 V,1427 Cr,1291 Mn,1150 Fe,1328 Co,1347 Ni,1348 Cu,1033 Zn,723 Ga,971 Ge,885 As,1061 Se,688 Br,544 Kr,52 Rb,798 Sr,1455 Y,1647 Zr,1736 Nb,1557 Mo,1587 Ru,1546 Rh,1387 Pd,1318 Ag,992 Cd,650 In,535 Sn,703 Sb,976 Te,705 I,533 Xe,68 Cs,797 Ba,1447 La,1570 Ce,1477 Pr,1574 Nd,1594 Sm,1580 Eu,1347 Gd,1647 Tb,1647 Dy,1647 Ho,1647 Er,1647 Tm,1647 Yb,1475 Lu,1647 Hf,1676 Ta,1565 W,1790 Re,1817 Os,1808 Ir,1598 Pt,1403 Au,1061 Hg,250 Tl,531 Pb,724 Bi,743 Th,1647 U,1604