Report copyright - Data Booklet...yttrium 39 88.91 Y 1.2 3+ magnesium 12 24.31 Mg 1.3 2+ beryllium 4 9.01 Be 1.6 2+ lanthanum 57 138.91 La 1.1 3+ cerium 58 140.12 Ce 1.1 3+ praseodymium 59 140.91 Pr
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