by abhishek | Aug 30, 2020 | Renewable Sources of Energy
The energy liberated by sun reaches the surface of earth in the form of three types of waves, all having different wavelengths. These are: Ultraviolet rays Visible light and Infra-red rays Out of these three types of waves, the ultraviolet rays and infra-red rays are...
by Rajan Gupta | Aug 30, 2020 | Modern Periodic Table
In addition to classifying the elements into s block, p block, d block and f block, the elements can be classified in three categories on the basis of their properties as: (1) Metals (2) Non-metals and (3) Metalloids. Position of Metals on the Periodic Table Metals...
by abhishek | Aug 30, 2020 | Renewable Sources of Energy
Sun is the earth’s primary source of energy. Sun provides us extremely large amount of energy in the form of both heat and light. The energy given out by sun is called solar energy. This enormous amount of energy is produced in sun by the nuclear fusion reaction...
by abhishek | Aug 30, 2020 | Renewable Sources of Energy
Energy of a body is the capacity to do work. Thus, anybody which can do work possesses energy. Our all activities depend on energy. For example, we need energy for cooking food, lighting, transportation, running machines and above all to live. Mainly energy is...
by Rajan Gupta | Aug 30, 2020 | Modern Periodic Table
The elements in which the last electron enters the f-orbitals of their atoms are called f-block elements. These consist of two series of elements placed at the bottom of the periodic table. Lanthanoids or Lanthanides or rare earth metals: The first series follows...
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