Chromium Cr Atomic Number 24 Atomic Mass 51.9961 Atomic radius 0.117 Ionization energy 652 Electronic config 2,8,13,1 Principal Valency +3 and +6 Density g/cm3 7.14 Melting point oC 1907 Boiling point oC 2671 Type of Element Metal Electronegativity 1.6 Appearance Gray solid Block d-block Period 4 Group 6 No ofContinue Reading
Spectrum is radio frequencies used to transmit voice, video and data. 2-G and 3-G are second generation and third generation spectrum, respectively. The fourth generation is being tested. 3-G facilitates high-end use and faster transmission of video images and data etc. 2-G spectrum is used only for voice transmission.Continue Reading
Nano is actually a SI prefix denoting 0.000 000 001, and for instance one nano-meter means one billionth of a meter. Obviously nano is referring to the fields dealing with such small scales (roughly 1–100 nm). It should be emphasized that ‘nano’ as a field of study, deals with size;Continue Reading
SCIENCE TERMINOLOGY General Knowledge Home Page Science is knowledge, often as opposed to intuition, belief, etc. It is, in fact, systematized knowledge derived from observation, study and experimentation carried on in order to determine the nature or principles of what is being studied. There are many sciences, each concerned withContinue Reading
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