Chemistry

Every moment of every day, chemistry plays a part in all we experience. This branch of the Helium network humbly attempts to illuminate the vast array of chemical knowledge, making it accessible to all. Let our site inform, inspire, and awe you with chemical wonders.
By: Lorri B Smalls
While researching the radioactive decay of actinium-227, francium was discovered by Marguerite Perey in 1939 at the Curie Institute in Paris. The element’s name comes from its country of discoveryFranceand was the last naturally occurring element discovered by scientists. All other elements have subsequently...
What is Francium?
By: Trenna Sue Hiler
French physicist Marguerite Perey from the Curie Institute is credited for discovering francium. Perey was analyzing a particulate from the decay of actinium. As it turns out francium is a rate of the decaying process. The existence of the element had been a theory, it...
By: John Welford
Arsenic is a metalloid element (chemical symbol As, atomic number 33) that has long been known to be poisonous to humans. In its compound form as arsenic trioxide (AS[2]O[3]) it has traditionally been a favourite weapon of murderers because it is tasteless and odourless and...
By: Heather Brennan
For most people the first word that comes to mind when you say “arsenic” is “murder.” While arsenic does have a long history as a poison of choice for many murderers, it has been used for a wide variety of other purposes...
By: Heather Brennan
Arsenic: Is there any better way to subtly do away with your enemies? Everyone from Nero to the Borgias to Agatha Christie has been a fan of it at some point in time. In the literary world arsenic remains one of the most popular poisons...
Element facts: Lithium
By: Alison Bowler
The element Lithium (Li) is found in period 2 and group 1 of the periodic table. Group 1 is also known as the alkali metal group and in addition to lithium includes sodium, potassium, rubidium, cesium and francium. It is a soft metal and can...
Element facts: Lithium
By: Retha Boswell
Lithium (Li) is an alkali metal discovered in 1817 by Johann Arfvedson, given the atomic number 3. Its name comes from “lithos,” the Greek word for “stone,” because it was first discovered in a mineral source rather than a plant source...
By: Retha Boswell
Lead is classified as one of the “other metals.” All of the other metals have qualities of malleability and ductility. They are similar to the transition elements, but do not have varying oxidation states, and their valence electrons only exist in their outer...
By: Nwachukwu Lawson Luke
Containing just a single valence electron, and located in Group 1 elements of the periodic table, Lithium is the lightest of all metals. it is generally classified as an alkali metal: this means that it is soft, malleable, ductile, extremely reactive, and a good conductor...
By: Santi Meintjes
Iodine was discovered by accident in 1811 by the French chemist Bernard Courtois. It is one of the better known elements among the general public, due to the very valuable property that it kills germs, mainly bacteria. Iodine (also known as Lugol after the physician...

 

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