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Phosphorus,White phosphorus,red phosphorus and black phosphorus

Phosphorus and white phosphorus structure

Phosphorus: Phosphorus is the second member of group VA. It’s name phosphorus is a greek word which means light bearing. Phosphorus is not found in free state. The important minerals are: Phosphate rock or phosphate, Ca3(PO4)2. Fluorapatite Ca5F(PO4)3…

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Noble Gases-Uses and noble gases properties|chemistry funda

Physical-properties-of-Noble-Gases

Noble Gases: Helium(He), Neon(Ne),Argon(Ar),Krypton (kr), Xenon (Xe) and Radon (Rn) are Noble Gases. They also called as Rare gases. They are members of group VIII A or zero group.The noble gases are present in atmosphere in small amount…

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Borax, Properties and Borax Uses|Chemistry funda

Borax-and-uses-of-borax-diagram

Borax: Borax is the sodium salt of tetraboric acid. It is also called Tincal. Its chemical name is sodium tetraborate decaHydrate. It is found in Tibet and California’s dry lake region. The common name of borax is Suhaga. Preparation of Borax: Borax is prepare by reaction of…

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Preparation of Sodium by Down’s cell and Nelson cell|chemistry funda

Preparation-of-Sodium-by-Downs-cell

Preparation of Sodium: We know that sodium (sodium preparation) is a chemical element and atomic number of sodium is 11 with NA symbol  . Its belong to group Number 1 because it has a single electron in outermost shell. It can readily donate electron from outer shell. It is highly reactive ,…

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Periodic table, laws and features of periodic table|chemistry funda

Periodic table for electronegativity

Periodic table Definition: The representation of chemical elements by atomic number,electronic configuration and chemical properties is called periodic table Dobereiner” Triads   A German chemist dobereiner found that several group of three elements called triads were related to atomic masses. In these group, the central or middle element had atomic mass average of the other…

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Organic chemistry and difference between organic and inorganic compound

Organic chemistry: Old definition: The branch of chemistry which deals with the study of compounds of carbon however the oxide of carbon,carbon mono oxide,carbon dioxide,carbonate,bicarbonate (CO,CO2,CO3–2,HCO3 ,CN-) etc.Exception to this general definition of organic chemistry. These carbon containing…

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Electronegativity and Factors Affecting the Electronegativity

Periodic table for electronegativity

Electronegativity: The relative tendency of a bonded atom in a molecule to attract the shared electron pair towards itself is called electronegativity. In other words, electronegativity is a measure of the ability of an atom in a molecule…

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