P BLOCK ELEMENTS

• published: 26 Sep 2014
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P - BLOCK ELEMENTS:Elements belonging to P- block have their highest P- orbitals incompletely filled. This level is progressively filled by the addition successively of electrons. Elements belonging to III A to VII A and zero group belong to P- block elements. They are placed at the extreme right of the periodic table. Boron:The name Boron comes from the Arabic and Persian words for borax, its principal ore. The pure element is shiny and black. It is very hard. The element can be prepared by the reaction of borax woth carbon.Aluminum:Aluminum ranks third on the list of the ten most abundant elements in the earth's crust, It is an excellent conductor of heat and electricity and finds use in some wiring. Aluminum is considered an active metal. It reacts rapidly with the oxygen in the air to form aluminum oxide o ralumina.Gallium:Gallium is one of the elements originally predicted by Mendeleev in 1871. Today, most gallium is still extracted from this zic mineral. At room temperature gallium is as soft as lead and can be cut with a knife.Indium:The element indium was discovered in 1863 by Reich and Richter. It is a rare metal, The pure metal is so soft that you can "wipe" it onto other meterials in much the same way as lead. It is corrosion resistant. Thallium:Sir William Crookes discovered thallium in 1861, positively identifying it by a bright green line in its spectrum. Thallium compounds are quite toxic and some have been used as rat poisons. 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customize the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. For more information: http://www.7active.in Contact: 040-64501777 / 65864777 9700061777