![]() Valence electrons can be defined as the electrons present in the outermost shell of an atom that can take part in chemical bond formation either by transferring to or sharing with another atom. The electronegativity of the carbon atom (2.55) is greater than the hydrogen atom (2.20) and in the case of hydrocarbon, carbon is placed in the central and hydrogen atoms are going to take the outer positions. In a C 2H 4 molecule, two carbon atoms have a double bond between them and each carbon forms bond with another two hydrogen atoms. Hence it is also known as electron dots structure. ![]() A dot represents a lone pair of electrons and a straight line represents a bond pair of electrons. It provides information about the bond pair and lone pair of electrons in a molecule. For example, ethylene is an unsaturated hydrocarbon.Ī simple skeletal diagrammatic representation of molecule atoms bonding is called Lewis structure. Unsaturated hydrocarbons are organic compounds that are entirely made up of carbon and hydrogen atoms and consist of a double or triple bond between two adjacent carbon atoms. It is used for making detergents and soda.It is commonly used to keep fruit ripe as well as to cut and weld metals.It is used as an anesthetic agent and as a welding gas.It is mainly used on plants as a hormone.Its boiling point -103.7☌ and its melting point -169.2☌.The molar mass of ethene is 28.05g/mol and density has 1-178kg/m 3.It is a colorless gas with a sweet odor and taste. ![]() It is the most produced organic compound in the world. This is a hydrocarbon with four hydrogen atoms bound to two carbon atoms connected with a double bond. This unsaturated hydrocarbon is also called olefin. ![]() It is the simplest alkene and has a double bond which makes it an unsaturated hydrocarbon. It is a colorless, sweet odor gas that can be produced in nature as well as in man-made processes. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.Ethylene is the chemical compound with the molecular formula C 2H 4. The three sides of an equilateral triangle form the axes representing the relative concentrations of methane (CH4), ethylene (C2H4) andacetylene (C2H2).The methane concentration is plotted along the axis with a positive gradient, ethylene along the axis with the negative gradient and acetylene along the horizontal axis : but going in the from right to left.The triangle is divided into a number of zones which indicate the most likely cause of failure.The Duval triangle is a diagnostic tool for oil insulated equipment. The Duval triangle is a diagnostic tool for oil insulated equipment.
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