Noble gases

Noble gases

1. Ahmed .H. Mohamed University of Garmian C0llage of Education- Evining Class Department of Chemistry First stage

2. Definition of gases Uses of gases Noble gases

3. Is a group of chemical elements that do not interact with other elements in a manner   General, because their electron orbits are complete and filled with electrons, including these Noble gases

4. Helium, neon, argon, krypton, xenon, radon. These elements are in the eighth group of the periodic order and they form 0.93% of the atmospheric volume and 1.29% of its mass. It is called inertia because it does not interact with other elements ie it is inactive Chemically and metaphorically noble of it as the nobles do not confuse with the general any ordinary elements. The following items group

5. Noble gases in the periodic order

6. 1. Show as gases in room conditions. 2. No color and no smell. 3. Have 8 electrons equivalent. 4. Produce vehicles only in special circumstances. 5. It is drawn from the air in liquefaction and distillation. 6. Found in the form of single-atom gases. 7. Very weak internal attraction between their atoms. 8. It has very low melting and boiling grades. properties of Noble gases

7. Helium (He) It is used for balloons and balloons because it is lighter than air and does not burn or explode. Uses of Noble gases

8. They use the lamps in cinemas.

9. Used to mark flight paths and gas lamps because of the color of its light Bright White. Xenon

10. It is used as liquefied gas in lighting lamps, especially as it does not react with the glowing metal wire even at high temperatures. Argon

11. Radon is highly flammable and carcinogenic by inhalation. Radon is used in the treatment of certain types of cancers. Radon

12. Density Year of discovery Noble gases 0.1785 g / cm 3 1895 Helium 0.899 g / cm 3 1898 Neon 1.784 g / cm 3 1890 Argonne 3.778 g / cm 3 1898 Krypton 5.88 g / cm 3 1898 Xenon

13. https:// ar.wikipedia.org/wiki https:// www.marefa.org http:// arabian-chemistry.com Sources