neon

Helium - Neon Gas Laser - The figure shows the elements of a type of laser that is often found in student laboratories. The glass discharge tube is filled with a 80%-20% mixture of the inert gases helium and neon. Helium is the "pumping" medium and neon is the "lasing"..

The figure shows the elements of a type of laser that is often found in student laboratories. The glass discharge tube is filled with a 80%-20% mixture of the inert gases helium and neon. Helium is the "pumping" medium and neon is the "lasing" medium. The above figure is a simpl..

The electronic configuration of neon atom is 1s 2 2s 2 2p 6 and the molecular orbital electronic configuration of neon molecule is: Ne 2 :KK( s 2s) 2 ( s *2s) 2 ( s 2p z ) 2 ( p 2p x ) 2 ( p 2p y ) 2 ( p *2p x ) 2 ( p *2p y ) 2 ( s *2p z ) ..

These gases are obtained from air by its liquefaction. Fractional distillation of liquefied air yields O 2 and N 2 . The mixture of noble gases is obtained as by-product. The individual gases are separated by absorption over coconut charcoal. The charcoal absorbs different noble gases at differen..

The second and third periods are known as short periods. Each consists of eight elements. The second period starts with lithium (Z = 3) and ends with inert gas neon (Z = 10). The third period starts with sodium (Z = 11) and ends with argon (Z = 18..

It is an inexhaustible natural resource. It is very essential for the survival of all the living organisms on earth. In atmosphere, about 95% of the total air is present upto a height of 20 km above the earth's surface. The remaining 5% of air is present up to a height of about 280 km. Air is a mix..

The amount of all the noble gases put together (Helium, Neon, Argon, Krypton, Xenon and radon) is extremely low in air. These form only 0.94% of the volume of air and as such can be treated as negligible. These gases were found chemically inert (i.e. did not mix with other elements ..

. Each nitrogen atom shares three electrons with the other to form a triple bond. By sharing three pairs of electrons each nitrogen atom attains the octet configuration of neon. A nitrogen atom cannot exist independently. It is highly reactive. By forming a triple bond a molecule of nitro..

Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alka..