Chapter 15: An Element of Madness
By: Justice ZIon
Synopsis
Selenium (Se)
Atomic Mass- 78.96
Period- 4
Group- 16
Electron Configuration- 1s2s2p3s3p4s3d4p
Classification- Nonmetal
Found- Selenium is found in rare minerals. Selenium is also found in some anode mud.
Why is this element important?- Selenium is a very important additive or factor that goes into the formation of glass (Chapter 15, . Also selenium is found in dandruff, therefore is found very useful in making the anti-dandruff shampoo(The Royal Society of Chemistry, 2013)
Where was it discovered?- Selenium was discovered in Stockholm in 1817 (The Royal Society of Chemistry, 2013)
Who discovered it?- Jon Jacob Berzelius (The Royal Society of Chemistry, 2013).
Who was it named after?- The element is named after "moon" in Greek Selene (Chapter 15, 134)
Unique Characteristics-in humans, the depletion of selenium in the bloodstream of AIDS patients is a fatally accurate harbinger of death (Chapter 15, 134)
Manganese (Mn)
Atomic Mass- 54.93
Period- 4
Group- 7
Electron Configuration- 1s^22s^22p^63s^23p^63d^54s^2
Classification- Metal
Found- Manganese is usually found in a combination of iron and many other elements. it is not your typical element you find in nature or out and about. Most of Manganese id found in galvanized shark teeth (Chapter 15, 136)
Why is this element important?- It is important because it's used in steel. It's too brittle to use in many other objects. (Chapter 15, 136)
Where was it discovered?- Venice, Ignatius Kaim (The Royal Society of Chemistry, 2013)
Who discovered it?- Johan Gottelieb Gahn 79(The Royal Society of Chemistry, 2013)
Who was it named after?- Either Latin for 'magnes' meaning magnet, or from the black magnesium oxide 'magnesia nigra' (The Royal Society of Chemistry, 2013)
Unique Characteristics- A very hard, silvery metal (The Royal Society of Chemistry, 2013)
Palladium (Pd)
Atomic Mass- 106.42
Period- 5
Group- 10
Electron Configuration- 1s^22s^22p^63s^23p^63d^104s^24p^64d^10
Classification- Transition Metal
Found- It can be found in Brazil. Palladium is usually found in nature
Why is this element important?- Palladium is important because it plays a big role in dentistry or just teeth. Lots of fillings have Palladium in them. (The Royal Society of Chemistry, 2013)
Where was it discovered?- Brazil, by miners (The Royal Society of Chemistry, 2013)
Who discovered it?- William Hyde Wollaston
Who was it named after?- It is named after the Greek goddess, Pallas (The Royal Society of Chemistry, 2013)
Unique Characteristics-Palladium has no know biological role
Barium (Ba)
Atomic Mass- 137.327
Period- 6
Group- 2
Electron Configuration- 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^25p^66s^2
Classification- Alkaline Earth Metal
Found- a combination or abundance of other elements, it is found in many types of algae(The Royal Society of Chemistry, 2013)
Why is this element important?- Used for drilling, or has also been known to be found in rat poison (The Royal Society of Chemistry, 2013).
Where was it discovered?- Royal Institution in London
Who discovered it?- Humphry Davy (The Royal Society of Chemistry, 2013)
Who was it named after?- Greek word 'barys' -heavy (The Royal Society of Chemistry, 2013)
Unique Characteristics- A very toxic element, gives fireworks the green color that is shown. (The Royal Society of Chemistry, 2013)
Roentgenium (Rg)
Atomic Mass- 272
Period- 7
Group- 11
Electron Configuration-
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d10 7s^1 (Chemical Aid, 2008)
Classification- Transition Metal
Found- Man-made element
Why is this element important?- This element is very important for research and to show bone features (Chapter 15, 140)
Where was it discovered?- Russian Joint Institute, Germany (Chapter 15, 140)
Who discovered it?- Wilhelm Conrad Rontgen (Chapter 15, 141)
Who was it named after?- Wilhelm Conrad Rontgen (Chapter 15, 141)
Unique Characteristics- Only used in research, and has no outside knowledge besides that. Rontgen won a Nobel prize for realizing that the 'mystery beams' contained roentgenium. (Chapter 15, 141)
Summary
References
- Element information, properties and uses | Periodic Table. (2013). Retrieved January 15, 2016, from http://www.rsc.org/periodic-table/
- Roentgenium (Rg). (n.d.). Retrieved January 15, 2016, from http://en.intl.chemicalaid.com/element.php?symbol=Rg