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Scandium
Sc
Atomic Number: 21
Atomic Weight: 44.955912
Melting Point: 1812 K
Boiling Point: 3109 K
Specific mass: 2.989 g/cm3
Electronegativity: 1.36
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Yttrium
Y
Atomic Number: 39
Atomic Weight: 88.90585
Melting Point: 1799 K
Boiling Point: 3609 K
Specific mass: 4.469 g/cm3
Electronegativity: 1.22
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Lutetium
Lu
Atomic Number: 71
Atomic Weight: 174.9668
Melting Point: 1936.15 K
Boiling Point: 3675 K
Specific mass: 9.84 g/cm3
Electronegativity: 1.27
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Lawrencium
Lr
Atomic Number: 103
Atomic Weight: [266]
Melting Point: 1900 K
Boiling Point: ? K
Specific mass: ? 16 g/cm3
Electronegativity: 1.3
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