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نقطه ذوب. 43 Tc تکنسیوم (Tc-98 ?) 61 Pm پرومتیوم (Pm-147 ?) The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [ Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C. The World Book encyclopedia from ...
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