Neon: A Chemical Element

In summarization,osmium ,Os, is a chemical element based on the periodic table. This element was discovered in the mixture of a mixture of nitric and hydrochloric acids. It has a atomic number of 76 and an atomic mass of 190.23. This is the most rarest of 118 chemical elements. Though this element is overlooked, this element has great

4) Heat the solid Neon to 20 K. What is this temperature in Celsius? -253°C

Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Shortly after it was identified as an element and named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. The gas was first isolated from terrestrial sources in 1895 by the British chemist Sir William Ramsay, who discovered it in cleveite. In 1907 Sir Ernest Rutherford showed that alpha particles are the nuclei of helium atoms.

Neon is found in the atmosphere. Neon is 0.002% of the atmosphere. Also, stars produce neon during the later stages of nuclear fusion.

The element I’m doing research on is Neon. Neon is usually used for advertising. For example, the Las Vegas sign uses neon so it can have a bright light or shine in the dark. The element’s chemical symbol on the periodic table is ‘Ne.’ It’s really easy to spot the symbol on the periodic table since it uses the first two letters in the actual word, Neon. The atomic number is shown above the element’s symbol on the periodic table. The number represents how many protons and neutrons it has. In this element, the number is 10, which means there’s 10 protons and neutrons. The atomic mass tells us the mass of the atom, for neon the mass is 20.180. In the periodic table, the mass is usually located underneath the chemical symbol. For each atom, every

In 1787, an unusual rock had come across the work of Dr. Adair Crawford when investigating witherite, a mineral in Strontian, Scotland ("Strontium | Periodic Table." Royal Society of Chemistry). The discoverer of the element was testing the results of witherite and hydrochloric acid. When Dr. Crawford mixed witherite with hydrochloric acid he did not get the results he expected. He assumed that his sample of witherite was contaminated with an unknown mineral, a mineral he named strontianite ("The Element Strontium." It's Elemental). The discovery by Dr. Adair Crawford was the start of strontianite, but it was not the end of research on this element. Although Dr. Crawford technically discovered strontianite, he did not prove that it was a new element. In 1791, Thomas Charles Hope, continued the investigation of strontianite ("Strontium | Periodic Table." Royal Society of Chemistry). Through his investigation, Hope proved that strontianite was a new element. Finally the element, now known as Strontium, was isolated. Strontium was first isolated by Sir Humphry Davy, an English chemist, in 1808 through the electrolysis of a mixture of strontium chloride and mercuric oxide ("The Element Strontium." It's

The noble gases are the gaseous elements helium, neon, argon, krypton, xenon, and radon, in group 18 of the periodic table. Additionally, they are considered the most unreactive of the elements, due to the fact that the valence electrons are all “full”, thus making the group the most stable, as well. When it comes to the periodic trends, the noble gases have the some of the lowest densities because they are gaseous elements, meaning they state of matter consisting of particles that have neither a definite volume nor definite shape. The lack of electronegativity of the noble gasses is based off of their group, which already has a full outer shell, meaning they do not attract any electrons.

(Spiers,1986). Cyanogen chloride was first created in 1802 by a French chemist. It is used

The Element: Chlorine General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures.

The fourth most abundant and by far one of the most interesting elements, Neon, is definitely unique. The tenth element on the periodic table is known as a noble gas, with the symbol ‘Ne’. This element has a density of 0.0008999 g/cubic meter, a boiling point of -246.08 degrees Celsius, three natural isotopes, an atomic mass of 20.179, and a melting point of -248.59 degrees Celsius. It’s atomic number is ten, and its atomic mass is 20.179.

Helium makes up about Helium is the second most abundant element in the universe. It was discovered on the sun before it was found on earth. In 1868 a french astronomer, Pierre-Jules-Cesar Janssen noticed a yellow line in the sun’s spectrum while studying a total solar eclipse. With a wavelength of 587.49 nanometers Norman Lockyer realized that this line could not be produced by any element at the time. It was hypothesized that the sun was responsible for this mysterious yellow emission. Lockyer named the unknown element helium.

Helium, a noble gas, is the second most abundant element in the universe. It was discovered on the sun before it was found on earth by French astronomer Pierre-Jules-Cesar Janssen in 1868. Helium received its name from the Greek word for sun, helios. Even though helium is so abundant throughout the universe it is relatively rare on Earth.

Element 95 on the periodic table, Americium was recognised in November 1945 by a chemist Glenn Seaborg who discovered the element as well as co-discovering ten other elements including Plutonium.1 The chemical element americium has atomic number 95 and an atomic weight of 243. Americium is a malleable, silvery white metal that tarnishes slowly in dry air at room temperature. . There are several known isotopes of americium and all of them are radioactive, the most stable being Americium -243 with a half-life of over 7500 years, although most common being Americium -241 with a half-life of 432.7 years, .2, 3, 4. Some of the isotopes of Americium include Am -237, Am- 238, Am -239, Am-240, Am-241, Am-242, Am-242m, Am-243, Am-244, Am-245 and Am-246.

Helium is a colorless, tasteless, and odorless gas. It has some very unique properties. Helium has the lowest boiling point of all the elements at -268.9C, or -452.0F. Its freezing point is -272.2C, or -458.0F. Helium is the only gas that can not be turned to a solid by lowering its temperature. To make helium solid you have to increase its temperature. When helium is at a temperature of -271C, it is a liquid but it has superfluidity properties. This means that liquid helium flows it doesn’t exert friction and it can leak through containers. Helium is also an inert gas, it doesn’t react chemically with any element or form bonds.

Gallium Master of the Elements Project By:Caleb and Evan Fun Facts ● Gallium is 99.99% pure! ● Gallium is soft!