Here's another Periodic Table of Videos top five selection.
This list comes from Ryan, known on YouTube as KyuubiNaruto1337XD.
Unlike some of other contributors, his selections are based on elements he likes rather than the videos themselves. But I quite like that!
Here's his list, which he puts in reverse order.
Ryan says: "The only element with 18 valance electrons, picked for originality."
Ryan says: "My favorite element because it is the last of the 92 naturally occurring elements, everything after that is synthetic, made in a laboratory or in a nuclear reactor. Although we know little about it, it was used in some of history's largest projects such as the Manhattan project where I believe Plutonium was created while enriching Uranium for the building of an Atomic bomb that was used on Japan in WWII"
Ryan says: "A very strange Element in my opinion, it takes the place and 'acts' like a metal where it appears in many solutions like Hydrochloric Acid, with only a single proton it is the lightest element in the universe. It's Isotopes have been used in Nuclear Reactors and Advanced Combat Optical Gun sights (ACOG scopes). Deuterium is used in Nuclear reactors, and Tritium is used in these ACOG scopes for weaponry and rifles."
Ryan says: "It is element number 100 and named after Enrico Fermi, because he was an Italian physicist, particularly remembered for his work on the development of the first nuclear reactor, and for his contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics."
Ryan says: "Picked because it is the last element to complete the p-block, and was discovered recently on April 5th, 2010, the next element to create is Ununennium (119) which will start the theoretical g-block."
Previous top five contributions have come from Nurdrage, Sarah, Alex and I've also done a "five most viewed" list.
If you'd like to make a contribution, get in touch.