Above the Periodic Table Chapter19

Presentation by: Luna Barreras-Leon

Synopsis of Chapter 19

The last chapter of The Disappearing spoon by Sam Kean discussed the elements Francium (Fr), Astatine (At), Einsteinium (Es), Indium (In),and Actinium (Ac). The author starts off the chapter talking about the two rarest elements ,Francium and Astatine, and how the elements have a certain rare order. The order is called 'magic numbers' , which basically means that as the heavier elements follow a pattern of rarity. Magic numbers and other heavy but stable elements are put into a section of the periodic table called the 'Island of stability'. Since all the elements mentioned are rare they are all considered 'magic numbers' so therefor they are part of the 'Island of Stability'.

All information used from 'The Disappearing Spoon' By Sam Kean

Francium (Fr)

  • Name Origin: Named after France
  • Discovered: In 1939 by Marguerite Perey
  • Where is it in the Periodic Table: Group 1 & Period 7
  • Atomic Number: 87
  • Atomic Mass: 223
  • Life Span: 22 Minutes
  • Uses: None
  • Reactive? : Yes very
  • Classification: Alkali Metal
  • Electron Configuration: 1s_2 2s_2 2p_6 3s_2 3p_6 3p_6 3d_10 4s_2 4p_6 4d_10 5s_6 4f_14 5d_10 6s_2 6p_6 7s_1
  • Characteristics: Very little around that there is not enough to make a visible sample, but if there was it would intently kill you due to how reactive it is.
  • Where to find: Very rare but can be found in Earths crust
  • Importance: Not useful due to low amounts of this element around us.

Info Here

Astatine (At)

  • Name Origin: Greek word 'Astatos' that means unstable
  • Discovered: 1940 by Dale Corson, Kenneth Ross Mackenzie & Emilio Segre
  • Where is it in the Periodic Table: Group 17 & Period 6
  • Atomic Number: 85
  • Atomic Mass: 210
  • Life Span: About 8 hours
  • Uses: Very similar to Iodine so it is used as a radioactive tracer and also used to treat cancer.
  • Reactive? : Yes VERY!
  • Classification: Halogen
  • Electron Configuration: 1s_2 2s_2 2p_6 3s_2 3p_6 3p_6 3d_10 4s_2 4p_6 4d_10 5s_2
    5p_6 4f_14 5d_10 6s_2 6p_5
  • Where to find: Very rare but can be found in the Earths Crust
  • Characteristics: Discovery confirmed by a Guinea Pig
  • Importance: Can treat Cancer & it is very rare

Info Here

Einsteinium (Es)

  • Name Origin: Named after Albert Einstein
  • Discovered: 1952 Lawrence Berkeley National Laboratory
  • Where is it in the Periodic Table: Group 3 Period 7
  • Atomic Number: 99
  • Atomic Mass: 252
  • Life Span: ?
  • Uses: No Uses due to its rareness and its radioactivity
  • Reactive? : Yes
  • Classification: Actinide Metal
  • Electron Configuration: 1s_2 2s_2 2p_6 3s_2 3p_6 3p_6 3d_10 4s_2 4p_6 4d_10 5s_6 4f_14 5s_2 5p_10 5f_11 6s_2 6p_6 7s_2
  • Where to find: Made/discovered in a Lab
  • Characteristics: Very toxic and radioactive
  • Importance: Very Rare

Info Here

Indiun (In)

  • Name Origin: Named after the color it emits, 'indi' for indigo.
  • Discovered: 1863 by Ferdinand Reich
  • Where is it in the Periodic Table: Group 13 Period 5
  • Atomic Number: 49
  • Atomic Mass: 114.82
  • Life Span: ?
  • Uses: Used to make anything with a touch screen and flat screen TVs.
  • Reactive? : No
  • Classification: Metal
  • Electron Configuration: 1s_2 2s_2 2p_6 3s_2 3p_6 3p_6 3d_10 4s_2 4p_6 4d_10 5s_2 5p_1
  • Where to find: Found in Zinc
  • Characteristics: It can conduct electricity
  • Importance: Very important part of touch screen technology

Info Here

Actinium (Ac)

  • Name Origin: Greek word 'aktis' that means ray
  • Discovered: 1899 by Andre Debierne & Marie Curie
  • Where is it in the Periodic Table: Group 3 & Period 7
  • Atomic Number: 89
  • Atomic Mass: 227
  • Life Span: ?
  • Uses: Neutron Production
  • Reactive? : Yes highly
  • Classification: Actinide Metal
  • Electron Configuration: 1s_2 2s_2 2p_6 3s_2 3p_6 3d_10 4s_2 4p_6 4d_10 5s_2 5p_6 4f_14 5d_10 6s_2 6p_6 6d_1 7s_2
  • Where to find: Rare in Earths crust but can be found in Uranium ores.
  • Characteristics: Radioactive and Glows in the Dark
  • Importance: No real importance outside a research lab.

Info Here

Over All Summery

All of the elements in chapter 19 were rare, made in a lab, very reactive, and even more then one of these. Since they are both rare and very reactive many of them do not have much importance (little to none) right now. These elements may become useful later in the future but for right they just to dangerous! For example Indium may not have been useful 30 years ago but now it is used for our enjoyment of modern technology. All elements will be useful at one time or another! Maybe one of them could be the cure for cancer, but we will never find that out if we give up hope on these elements!

Quiz Time!!!

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