Problem in the Periodic table with the placement of some elements.

Periodic table is one of the most important way to know about any primary element of the world. It has become a very important way for the Chemists who dedicate their life in discovering more about the elements of World. At this moment periodic table is a must for those who are interested in in Chemistry. It has a long history

Solar power system in the space by China

At this moment the world's most useful power is the electricity. There are many ways to produce electricity. Many countries mainly use the coal for producing the electricity. This is one of the most harmful way of producing electricity. As this produce a large amount of Carbon