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Elements.

Elements. By: Ellen Newbury. Atomic Number: 21 Atomic Symbol: Sc Atomic Weight: 44.9559 Electron Configuration:[Ar]4s23d1 Atomic Radius: 160.6 pm Melting Point: 1541C Boiling Point: 2836C. Say whaaat? it's pronounced: SKAN-di-um!. Scandium. 21 protons; 24 nuetrons.

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Elements.

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  1. Elements. By: Ellen Newbury.

  2. Atomic Number: 21 Atomic Symbol: Sc Atomic Weight: 44.9559 Electron Configuration:[Ar]4s23d1 Atomic Radius: 160.6 pm Melting Point: 1541C Boiling Point: 2836C Say whaaat? it's pronounced: SKAN-di-um! Scandium 21 protons; 24 nuetrons. Classification: Metal. http://periodic.lanl.gov/elements/1.html

  3. 1 proton. 0 neutrons. Atomic Number: 1 Atomic Symbol: H Atomic Weight: 1.0079 Electron Configuration: 1s1 Atomic Radius: 78 pm. Melting Point: - 259.34 �C Boiling Point: -252.87 �C Hydrogen. N P http://periodic.lanl.gov/elements/1.html

  4. 57. Name: LanthanumSymbol: LaAtomic Number: 57 Atomic Mass:138.9055 amu Melting Point: 920.0 °C (1193.15 K, 1688.0 °F) Boiling Point: 3469.0 °C (3742.15 K, 6276.2 °F) Number of Protons/Electrons: 57 Number of Neutrons: 82 Lanthanum. Electron Configuration: [Xe]6s25d1 http://www.chemicalelements.com/elements/la.html

  5. http://www.radiochemistry.org/periodictable/elements/57.html http://www.chemicalelements.com/elements/la.html http://periodic.lanl.gov/elements/1.html Cited Works http://education.jlab.org/itselemental/ele057.html http://www.chemicool.com/elements/scandium.html

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