Author: misamaliraza94
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Nitrogen
Nitrogen Symbol N Atomic Number 7 Atomic Mass 14.007 Discovered by Daniel Rutherford in 1772 Chemical Properties of Nitrogen Group 15 Melting point −210.0°C, −346.0°F, 63.2 K Period 2 Boiling point −195.795°C, −320.431°F, 77.355 K Block p Density (g cm−3) 0.001145 Atomic number 7 Relative atomic mass 14.007 State at 20°C Gas Key…
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Carbon (C)
Carbon Symbol C Atomic Number 6 Atomic Mass 12.011 Discovered Lavoisier proposed carbon in 1789 The Atomic number of Carbon is 6. Chemical Properties of Carbon Group 14 Melting point Sublimes at 3825°C, 6917°F, 4098 K Period 2 Boiling point Sublimes at 3825°C, 6917°F, 4098 K Block p Density (g cm−3) 3.513 (diamond); 2.2 (graphite)…
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Boron
Boron Symbol B Atomic Number 5 Atomic Mass 10.821 amu Discovered by Joseph Louis Gay-Lussac in 1808 Chemical Properties of Boron Group 13 (Boron Group) Melting point 2349K Period 2 Boiling point 4200K Block p-block Density (g cm−3) 2.08 (when liquid) Atomic number 5 Electron configuration [He]2s22p1 State at 20°C Solid What is Boron? Boron…
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Beryllium
Beryllium Symbol Be Atomic Number 4 Atomic Mass 9.01218 g.mol-1 Discovered by Nicholas Louis Vauquelin What is Beryllium? Beryllium is an element with an atomic number of 4 in the periodic table. It is a bivalent and highly toxic element. The element has one of the highest melting points among the light metals. Beryllium exists in…
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Lithium
Lithium Symbol Li Atomic Number 3 Atomic Mass 6.941 g.mol -1 Discovered by Johann Artvedson in 1817 Chemical Properties Group 1 Melting point 180.5 °C Period 2 Boiling point 2061 °C Block s Density (g cm−3) 0.534 Atomic number 3 Relative atomic mass 6.94 State at 20°C Solid Key isotopes 7Li Electron configuration [He] 2s1 CAS…
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Helium ( He )
Helium Representation of Helium Helium symbol He Helium atomic number 2 Helium atomic mass 4.003 Discovered by Sir William Ramsay in London, Per Teodor Cleve and Nils Abraham Langlet. What is Helium? Helium, the lightest of the noble gases, had actually been detected and helium is the only element in the periodic table that was discovered…
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Hydrogen
Hydrogen Symbol H Atomic Number 1 Atomic Mass 1.008 Discovered by Hydrogen was discovered by Henry Cavendish Physical Properties Of Hydrogen It is a gas with no colour and odour and has the lowest density of all gases. It is seen as the clean fuel of the future which is generated from water and returned…
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Types of Biomolecules
There are four major classes of Biomolecules – Carbohydrates, Proteins, Nucleic acids and Lipids. Each of them is discussed below. Carbohydrates Carbohydrates are chemically defined as polyhydroxy aldehydes or ketones or compounds which produce them on hydrolysis. In layman’s terms, we acknowledge carbohydrates as sugars or substances that taste sweet. They are collectively called as saccharides (Greek: sakcharon = sugar).…
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What are Biomolecules?
Biomolecules are the most essential organic molecules, which are involved in the maintenance and metabolic processes of living organisms. These non-living molecules are the actual foot-soldiers of the battle of sustenance of life. They range from small molecules such as primary and secondary metabolites and hormones to large macromolecules like proteins, nucleic acids, carbohydrates, lipids etc.
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List of Chemical Compound Formula
There are several chemical formulae, however, here is a list of most important Chemical Formulas in chemistry. Sl.No Name of the Chemical Compound Formula 1 Acetic acid formula CH3COOH 2 Aluminium hydroxide formula Al(OH)3 3 Acetate formula CH3COO- 4 Acetone formula C3H6O 5 Aluminium acetate formula C6H9AlO6 6 Aluminum bromide formula AlBr3 7 Aluminum carbonate…