Rare earth element

The second most abundant element in the Earth’s crust other than oxygen is silicon which if by mass is around 25.7g or 23%. However in nature, silicon never exist as a free or pure element but instead it mostly combines with the most abundant element in the Earth’s crust, oxygen, hence producing silica (SiO₂) or silicate minerals. The most prominent charge of Si in the crust is +4 rather than +2 which involve a silicon atom to bond in a tetrahedral manner with 4 other oxygen atoms giving rise to…

organizing elements by atomic numbers and chemical properties into groups and periods. The periodic table was created in order to easily find and classify the different elements that are known. Elements are pure substances composed of just one type of atom that cannot be broken down into anything simpler by ordinary chemical means. Some examples are Oxygen, Carbon, Gold, and Silver. [Source A] An atomic number is the number of protons or electrons in an atom, the number that appears over the…

as cryogenics, lasers and neon signs. Also because neon is so rare compared to other elements Neon was discovered or isolated in 1898 by two chemist named Ramsay and Travers along with krypton and xenon Neon got its name from the Greek word neos which means new Neon is important for lighting,signs,lasers and refrigeration Neon is the fifth most abundant element in the universe but is very rare on Earth(about 0.0018%) of the earth atmosphere its symbol is Ne its atomic number is 10,atomic…

How are elements useful for a particular use? An element is made from one type of atom and this article is about the element Scandium. Scandium was discovered in the year 1879 by Scientist Lars Fredrik Nilson in the university of Uppsala. The origin of the name comes from the word Scandia, which is the latin name for Scandinavia. This element belongs to group 3 which consists of transition metals and Scandium shares this group with the element Yttrium. There are 4 groups in the periodic table…

Thesis Statement: The world's population growth has caused a destruction of the environment. I. Agriculture may look common and environmental friendly but as the amount of farm increased with the population, we had actually damaged the environment. A. Farming had caused soil erosion and degradation. 1. As we build more farm for planting usage, many forest had been damaged.It may further lead to soil erosion. 2. Pesticide and fertilizer used destroy the soil’s natural properties, not to mention…

Cerium is a rare earth element of the lanthanide series (atomic no. = 57– 71) of the periodic table. Among the various rare earth metals, cerium granted a hugeattention towards scientific community due to its catalytic antioxidant property. Usually, antioxidants protect cells from oxidative damage, mediated by ‘reactive oxygen species’ (ROS), which include free radicals such as superoxide anion (O2•-), hydroxyl radical (•OH), singlet oxygen (1O2) and non-free radical species like hydrogen…

Why did they use krypton as this all might entity’s weakness? It is quite an interesting element to think about. Going back to Britain, krypton was very popular there. It was discovered by two chemist named Sir William Ramsay and Morris M. Travers on May 30th 1898 while they were researching a study on liquified air. They had found traces of the element after boiling away the liquified air in other elements such as argon to find larger traces and they had succeeded. They were able to gain a…

In the 1973 movie Soylent Green, the Earth is predicted as a world in complete disarray, having succumbed to overpopulation, pollution and global warming. With the backdrop story of a detective hot on the trail of the murderer of a prominent businessman, we are introduced to the harsh elements that could befall a giant metropolis (such as New York City, where the film is set) in a situation where the global climate…

Era, nobody had a clue. Until humans researched the resources left behind. Back in the Precambrian Era . Earth was born. 4.6 million years ago, not even that many.! Stars and the planets were too! Rocks and much more formed on land. They are very old also known as “ancient.” The oldest rock were from Western Australia, known as Zircon Crystals. Finally oxygen and other natural elements have risen. The ozone layer also formed. After the Precambrian Era,…

there needs to be a decrease in government spending on programs because of the government deficit, NASA should not have received such a large portion of their program spending cut. NASA has possible plans for the future, as it is most likely that Earth will reach its carrying capacity at some point. NASA indicated that human overpopulation could ease by developing "space- based colonies." This, if funded, could solve a monumental potential threat to the world. The government has made huge…