Elements.

By: Ellen Newbury.

Atomic Number: 21Atomic Symbol: ScAtomic Weight: 44.9559 Electron Configuration:[Ar]4s23d1 Atomic Radius: 160.6 pm Melting Point: 1541CBoiling Point: 2836C

http://periodic.lanl.gov/elements/1.html

http://periodic.lanl.gov/elements/1.html

Atomic Number: 1Atomic Symbol: H

Atomic Weight: 1.0079

Electron Configuration: 1s1

Atomic Radius: 78 pm.

Melting Point: - 259.34 C�

Boiling Point: -252.87 C�

P

N

Name: Lanthanum Symbol: La Atomic 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

http://www.chemicalelements.com/elements/la.html

Electron Configuration: [Xe]6s25d1

http://www.radiochemistry.org/periodictable/elements/57.html

http://www.chemicalelements.com/elements/la.html

http://periodic.lanl.gov/elements/1.html

http://education.jlab.org/itselemental/ele057.html

http://www.chemicool.com/elements/scandium.html