Noble+Gases

Noble gases: Luciana&Kim || 18  ||  39.948  ||  18  ||  18  ||  3  ||  −185.85 87.30 K, −302.53 °F °C,  ||  −189.35 83.80 K, −308.83 °F °C,  ||  71 pm  ||  1894  ||
 * Element || Symbol || Appearance || Atomic # || Atomic Mass || # of proton's || # of valence electron/s || # of shells || Boiling point || Melting point || Atomic Radius || Discovery Date ||
 * Helium || He  ||  Helium is a light, odorless, colorless, inert, monatomic gas. It can form diatomic molecules, but only weakly and at temperatures close to absolute zero.  ||  2  ||  4.0026  ||  2  ||  2  ||  1  ||  −452.07 °F −268.93 °C, 4.22 K,  ||  −272.20 (at 2.5 MPa) 0.95 K, −457.96 °F °C,  ||  31 pm  ||  1895  ||
 * Neon || Ne  ||  colorless gas exhibiting an orange-red glow when placed in a high voltage electric field  ||  10  ||  20.18  ||  10  ||  10  ||  2  ||  -246.08 27.07 K, -410.94 °F °C,  ||  -248.59 24.56 K, -415.46 °F °C,  ||  38 pm  ||  1898  ||
 * Argon || Ar  ||  colorless gas exhibiting an lilac/violet glow when placed in a high voltage electric field
 * Krypton || Kr  ||  Colorless gas, exhibiting a whitish glow when placed in a high voltage electric field  ||  36  ||  83.8  ||  36  ||  36  ||  4  ||  -153.22 119.93 K, -244.12 °F °C,  ||  -157.36 115.79 K, -251.25 °F °C,  ||  189 pm  ||  1898  ||
 * Xenon || Xe  ||  Colorless gas, exhibiting a blue glow when placed in a high voltage electric field  ||  54  ||  131.29  ||  54  ||  54  ||  5  ||  (101.325 kPa) 165.03 −162.62 °F −108.12 °C, K,  ||  (101.325 kPa) 161.4 −169.1 °F −111.7 °C, K,  ||  218 pm  ||  1898  ||
 * Radon || Rn  ||  Radon is a colorless and odorless gas, and therefore not detectable by human senses alone.  ||  86  ||  222.02  ||  86  ||  86  ||  6  ||  −61.85 211.3 K, −79.1 °F °C,  ||  −71.15 202.0 K, −96.07 °F °C,  ||  n/a  ||  1898  ||

__1. Can you see any trends in the information collected? __ As you go down the table the atomic number gets bigger, the atomic mass, number of protons and atomic radius also rises. The number of shells also rises in a consecutive manner from one to six. The number of valence electrons goes in a pattern of 5 and 2. The dicovery dates are also quite similar and near. __ 2. How are the elements of this family the same? __  The elements in the Nobel gases family are the same because a pattern develops with the number of valence electrons and the number of shells rising consecutively. __ 3. How are the elements of this family different? __  The elements of the Noble gases family are different because the discovery date varies and the physical appearance is not at all similar.

HELIUM:

__ Common compounds: __ Helium is an inert gas (meaning all the electronic orbital are filled). It is extremely difficult to produce compounds of Helium, and resultants are always unstable. There are no known compounds of Helium at room temp and pressure and only a handful under extreme pressures and temperatures __ Uses of these elements and/or their compounds: __ Helium is a noble gas found on the periodic table some of its common uses in everyday are the following: · Helium is used to compress hydrogen and oxygen to make rocket fuel. · For materials easily contaminated by air, helium is used as a shielding gas. · Helium can be added to oxygen tanks so that divers can breathe under water much more effectively and easily. This is especially important for people that go deep diving. · As helium is much lighter than air, airships and balloons can be filled with the helium to gain lift. · Helium is used to cool superconducting magnets in MRI scanners. · Helium is able to make your voice extremely high pitched when it is inhaled. NEON:

__ Common compounds: __ There are no compounds of neon. __Uses of these elements and/or compounds__: - The best known use of neon gas is in neon lights and Neon signs. A neon light consists of a glass tube filled with neon or some other inert gas. - Neon is also used in the manufacture of lasers. - neon tubes are used in instruments used to detect electric currents. - The characteristic discharge property of neon is used in fluorescent lamps and various other lighting systems. - Neon light has the ability to penetrate fog, in which other lights are impossible to detect. This property of neon light is also applied in aeroplane or aircraft beacons. ARGON: __ ﻿ ﻿Common compounds: __ No compound of argon has ever been produced. __Uses of these elements and/or compounds__: - Argon is used to create that inert atmosphere required for welding metals such as aluminum and stainless steel. - Argon is also used in fire extinguishers, owing to its tendency of extinguishing fire without causing any harm to the equipment. - In the semiconductor industry, it is used to create a protective environment for the development of silicon and germanium crystals. - An ideal preservation agent, argon is also used to preserve old documents, and other material of historical significance. - In wine making, it is used to ensure that the bottles of wine are not subjected to oxidization when kept open. - In scuba diving, argon is used to inflate dry suits owing to the fact that it has a low thermal conductivity. - In a process referred to as Potassium-Argon Dating, argon is used in dating ground water, ice cores, igneous rocks etc. - In the field of medicine, it is used in the lasers meant to destroy tumors, weld arteries, correct the defects in eyes, etc.

KRYPTON: __ ﻿ ﻿Common compounds: __ - krypton difluoride (KrF 2 ) and krypton tetrafluoride (KrF 4 ) __Uses of these elements and/or compounds__: - Krypton are used in various kinds of lamps. When an electric current is passed through krypton gas, it gives off a very bright light. - The most common application of this principle is in airport runway lights. These lights are so bright that they can be seen even in foggy conditions for distances up to 300 meters (1,000 feet). - Krypton gas is also used in making "neon" lights, a neon light filled with krypton, for example, glows yellow. XENON: __ Common compounds: __ For many years, xenon was thought to be completely inactive. Inactive means that it does not react with any other element. - xenon platinofluoride (XePtF 6 ) - xenon difluoride (XeF 2 ) - xenon tetrafluoride (XeF 4 ) - xenon hexafluoride (XeF 6 ) - xenon trioxide (XeO 3 ) - xenon oxytetrafluoride (XeOF 4 ) __Uses of these elements and/or compounds__: - The primary use of xenon is in lamps. When an electric current is passed through a gas, it can give off light. - fluorescent lamps and "neon" lights - flash units and bright lights used by photographers are often made with xenon gas. - Ultraviolet lights used to sterilize laboratory equipment may also contain xenon. - Xenon is also used in the manufacture of strobe lights. A strobe light produces a very bright, intense light in very short pulses. RADON: Image not available. The uses for radon all depend on the radiation it gives off. That radiation cannot be seen, smelled, tasted, or detected by any other human sense. __ Common compounds: __ - Radon fluoride (RnF) __Uses of these elements and/or compounds__: - Geiger counter, which is a device that makes a clicking sound or flashes a light when radiation passes through it. Bibliography: Information: [|http://www.chemistryexplained.com] [|http://www.buzzle.com] [|http://en.wikipedia.org] [|http://www.lenntech.com] Images: [|http://en.wikipedia.org]