Noble Gases: The Most Stable Elements Of The Periodic Table

Boron is one of the many elements on the periodic table. Its atomic number is five and its symbol is the letter B. Boron’s atomic weight is 10.811. It is a solid at room temperature. The group number for Boron is 13 and the periodic number for Boron is 2. It is also in the p block. Its element category is a metalloid. Boron came from the Arabic word Buraq and the Persian word Burah, which are both meanings for the material called “Borax.” Boron is a tough element – very hard, and very resistant to heat. In its crystalline form it is the second hardest of all the elements on the mohs scale – only carbon (diamond) is harder. Only 11 elements have higher melting points than boron: these are C, W, Re, Os, Ta, Mo, Nb, Ir, Ru, Hf, and Tc.

Helium (Greek helios,"sun"), symbol He, inert, colorless, odorless gas element. In group 18 of the periodic table, helium is one of the noble gases. The atomic number of helium is 2.

chemical element here on our own planet Earth. Though it is a rare, unreactive noble gas,

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.

In the Flame Test Lab we took different ions of salt and put them over a bunsen burner to determine the wavelength of the light. The wavelengths of light visible are in the group visible light: red, orange, yellow, green, blue, indigo, and violet. The colors in which we view an object are reflected off the object, the other colors are absorbed. Each element has a specific color that is given off; it is like a fingerprint. We recorded this data and compared it between the different salt ions, After that, our teacher gave us two unknowns to test.

Hydrogen rests at the summit of group yet it is not a representative of that family. Hydrogen is inside a category of its own. Gas at free space temperature.

The origin of the second element on our periodic table still hasn’t fully been found, neither the many secrets that it holds. Helium is one of first know elements to every been discovered, and still is being examined and studied for any other hidden secrets that it might hold. While some people might believe that it’s a element that is hardly used, it would shock people to discover that as human beings, helium is a daily element that surrounds us not only just in the atmosphere, but is used for tons of different jobs and situations.

The construction of the Periodic Table of Elements was prior to the discovery of the individual elements. Elements such as silver, gold, tin, copper, lead and mercury have been known for centuries. In 1649, the first scientific discovery of an element was made by Hennig Brand when he discovered phosphorous. Prior to Brand’s discovery, chemists had acquired an immense body of understanding concerning the properties of elements and their compounds for the next 200 years.

Airen (Argon)- Noble Gas. Noble gases have a full valence electron shell, which means they have no reactivity, or need to bond with other elements. It is used when an inert, or not easily reactive to other elements, atmosphere is needed. It is perfect for the character Airen in this story because is the hot dog vender and when his stand gets crushed there is hardly a reaction from

Though there are over a hundred different elements, each one is unique in its complexity and properties. Helium has an atomic Number of two, that’s how you can tell it it has two positively charged atoms, or ‘protons’, in

The elements are positioned on the periodic table based on their atomic number. Atomic number, or the number of protons in the nucleus, is what distinguishes each element on the chart. In the original design of the periodic table, elements were organized based on their atomic mass, however it was later discovered that placing the elements based on atomic number made more sense, as it created a pattern and allowed it to be known what elements are yet to be discovered. Generally, however, the atomic mass increases with the atomic number. Hydrogen is probably the most simple example. Hydrogen (H) has only one proton in its nucleus, so it’s atomic number is one. Therefore, it is the very first element on the periodic chart.

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.

All of the elements in group one are highly reactive with both chlorine and water. For example: If you mix lithium/sodium/potassium/rubidium/caesium/francium with chlorine gas, they will immediately burst into a flame and they will burn brightly for a certain amount of time, this makes chlorides. When you react these elements with oxygen, the outcome is pretty similar. It will also burst into flame although it will burn slightly fiercer than chlorine. This reaction creates oxides. There are different reactions for some of the elements when mixing with oxygen, lithium will show a red flame, sodium will present a yellow flame and potassium will reveal a lilac flame. As you move down the

The placement of hydrogen and helium on the Periodic Table causes many of the mistakes, anomalies and exceptions in the rules it follows. First, hydrogen is a non-metal, but it is placed on the metal side due to its atomic number and because it only has one valence electron. Placing the element in the middle of the table keeps hydrogen from being falsely labeled as an alkali metal and keeps it from being classified as a metal since it isn’t identified with a specific column or group. Secondly, helium is a noble gas, but it has two valence electrons, which means it should be in group two. However, it is a non-metal so putting it in group two would also be inaccurate. To fix this, we also put helium in the center and used color coding to match

Helium is one of the most common elements in the universe. Helium is found mainly on the sun but can also be found in Earth’s atmosphere and is rarely found on earth. Helium is the lightest known element in the universe. It is even lighter than air. Only 0.0005% of earth's atmosphere is helium. Since its existence, helium has been the most interactive element. It has a complete shell of electrons. The main parts of this element consist of two electrons, two protons and two neutrons.