Francium By Ciera Johnson
Basic Information• Atomic Symbol: Fr• Atomic Number: 87• Protons: 87• Electrons: 87• Neutrons: 136• Average Atomic Mass: 223
Continued                            • Group in periodic table: 1                            • Group name: Alkali metal   ...
Interesting Information• The second rarest naturally occurring  element.• It was the last element discovered in nature,  t...
Discovery   • Francium (Eka-caesium)     was discovered in 1939 by     Marguerite Perey of the     Curie Institute in Pari...
Isotopes• There are 34 identified Francium isotopes.• There are no stable isotopes of Francium.• Francium-223 is the most s...
Atomic Structure.        • 7 Energy Levels        • 1st: 2                       • 4th: 32        • 2nd: 8                ...
Courses Cited• http://en.wikipedia.org/w/index.php?  title=Francium&printable=yes• http://www.andyscouse.com/pages/franciu...
Upcoming SlideShare
Loading in...5
×

Francium

470

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
470
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
13
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • Francium

    1. 1. Francium By Ciera Johnson
    2. 2. Basic Information• Atomic Symbol: Fr• Atomic Number: 87• Protons: 87• Electrons: 87• Neutrons: 136• Average Atomic Mass: 223
    3. 3. Continued • Group in periodic table: 1 • Group name: Alkali metal • Period in periodic table: 7 • Melting point: 27.2ºC (80.96ºF) • Boiling point: 677ºC (1,250.6ºF)• It is so radioactive and hard to work with, there is not much known about Francium.• It also has no uses because it is so radioactive.
    4. 4. Interesting Information• The second rarest naturally occurring element.• It was the last element discovered in nature, that isn’t synthesis.• The most unstable of the naturally occurring elements• As little as 20–30 g (one ounce) exists at any given time throughout the Earth’s crust.
    5. 5. Discovery • Francium (Eka-caesium) was discovered in 1939 by Marguerite Perey of the Curie Institute in Paris, France • This element existence was predicted by Mendeleev during the 1870s, he called it eka-caesium.
    6. 6. Isotopes• There are 34 identified Francium isotopes.• There are no stable isotopes of Francium.• Francium-223 is the most stable isotope with a half-life of 21.8 minutes• The least stable ground state isotope is francium-215, with a half-life of 0.12 "s.• All isotopes of Francium decay into either astatine, radium, or radon.
    7. 7. Atomic Structure. • 7 Energy Levels • 1st: 2 • 4th: 32 • 2nd: 8 • 5th: 18 • 3rd: 18 • 6th: 8 • 7th: 1
    8. 8. Courses Cited• http://en.wikipedia.org/w/index.php? title=Francium&printable=yes• http://www.andyscouse.com/pages/francium.htm• http://www.chemicalelements.com/elements/ fr.html• http://www.aip.org/history/newsletter/fall2004/ strasbourg-photo.htm• http://www.webqc.org/periodictable-Francium- Fr.html• http://www.periodicvideos.com/videos/087.htm
    1. A particular slide catching your eye?

      Clipping is a handy way to collect important slides you want to go back to later.

    ×