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Rubidium

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Rubidium. By: R. H. General Knowledge. Name: Rubidium. Group: Alkali metals- period 5 group 1 ... of electrons in each shell: 2,8,18,8,1. Discovered: 1861 by ... – PowerPoint PPT presentation

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Title: Rubidium


1
Rubidium
  • By R. H.

2
General Knowledge
  • Name Rubidium
  • Group Alkali metals- period 5 group 1
  • Atomic Weight 85.4678
  • Symbol Rb
  • Atomic Number 37
  • of electrons in each shell 2,8,18,8,1
  • Discovered 1861 by Robert Wilhem Bunsen
  • Density At 293 K 1.53 g/cm3

3
States
  • State Solid
  • Melting Point 312.09 K
  • Boiling Point 961 K
  • Heat of fusion 2.192 kJ/mol
  • Heat of Vaporization 72216 kJ/mol

4
Appearances Characteristics
  • Color Silvery- White
  • Uses Photocells
  • Hardness 0.3 mohs
  • Characteristics Soft
  • Structure BBC- Body-centered cubic

5
Protons, neutrons and electrons
  • Protons 37
  • Electrons 37
  • Neutrons 48

6
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7
About Rubidium
  • The cost is 25/gram
  • Ignites spontaneously in air and reacts violently
    in water.
  • Used in vacum tubes and special glasses and film
    batteries

8
Resources
  • http//www.chemicool.com/elements/rubidium.html
  • http//periodic.lanl.gov/elements/37.html
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