From English Wikipedia @ Freddythechick
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Boron
B
Atomic Number: 5
Atomic Weight: 10.811
Melting Point: 2573.15 K
Boiling Point: 4200 K
Specific mass: 2.34 g/cm3
Electronegativity: 2.04
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Aluminium
Al
Atomic Number: 13
Atomic Weight: 26.9815386
Melting Point: 933.4 K
Boiling Point: 2792 K
Specific mass: 2.698 g/cm3
Electronegativity: 1.61
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Gallium
Ga
Atomic Number: 31
Atomic Weight: 69.723
Melting Point: 302.91 K
Boiling Point: 2477 K
Specific mass: 5.907 g/cm3
Electronegativity: 1.81
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Indium
In
Atomic Number: 49
Atomic Weight: 114.818
Melting Point: 429.91 K
Boiling Point: 2345 K
Specific mass: 7.31 g/cm3
Electronegativity: 1.78
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Thallium
Tl
Atomic Number: 81
Atomic Weight: 204.3833
Melting Point: 577.15 K
Boiling Point: 1746 K
Specific mass: 11.85 g/cm3
Electronegativity: 1.62
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Nihonium
Nh
Atomic Number: 113
Atomic Weight: [286]
Melting Point: ? 700 K
Boiling Point: ? 1400 K
Specific mass: ? 18 g/cm3
Electronegativity: ?
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