Now, It's time to introduce you guys to Our highness!!! The…. …Noble family! -For your convenience, we have prepared for you the interview that we just did with the family members so you can understand their life and works better. -Let’s start and enjoy!
Family name: Noble gases Family number: 18 Each members’ names: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Ra) Family’ signature (electron configuration): He (s 2 ), the rest (np 6 ), n=the main energy level State of matter: gas Special family name: Group 0, inert family
Physical Properties: Colorless, odorless, tasteless, nonflammable Relative low boiling and melting points (the boiling/melting points for each gas are close to each other). All gases are at room temperature. Poor conductors of heat and electricity Very low electro-negativities Radon is the only one that radioactive Chemical Properties: Used to be inert, but Kr, Xe, Ra actually can form some compound with Halogen family. Compounds have powerful oxidizing properties synthesize other compound. Don’t have much reactivity. But can react when ionized Ne<He<Ar<Kr<Xe<Rn
They are free elements, exist as single atom Besides He, Ar, Ne, Xe, Kr are present in the air, can be isolated by liquefaction and fraction distillation. Elements’ Occupations Helium: uses for air craft such as balloons and zeppelins, Divers breathe oxygen- helium to prevent bubble in the blood, use as protective gas in growing silicon and germanium crystals for supersonic wind tunnels. Neon: is well known for its use in neon signs. Glass tubes of any shape can be filled with neon. Argon: uses to fill ordinary incandescent light bulbs, used to provide an inert atmosphere in welding and high-temperature metallurgical processes. Krypton: is combined with argon to be used in fluorescent signs, also used in flash lamps, incandescent light bulbs and high-speed photography. Xenon: can be find in commercial lighting applications. It also employed in flashing stroboscopic lights that outline commercial airport runways, and using in photographic flash equipment. Radon: is used in medical applications for cancer treatment, but many deaths by lung cancer have occurred from radon exposure
The members' charms Helium makes your voice sound like a chipmunk because it is less dense than atmospheric air Helium makes up % of all the air we breathe 1/4 of the mass in the Universe is made up of Helium Atoms Xenon translates to “stranger” in Greek Xenon is a rare, colorless, odorless heavy gas Xenon is one of the heaviest gases; one liter of xenon weighs grams Krypton- The only present inflammable gas in the atmosphere Krypton comes from the Greek word ‘kryptos’ meaning hidden Argon is the 3rd most abundant gas in the world