So, to understand chemical bonding, only sketching a lewis structure diagram is not sufficient. In reality, the molecular shape of ethene is not linear. When we draw the Lewis Structure of C2H4, we find a linear 2-D representation. Here, we have got the most suitable and appropriate Lewis Structure Sketch of ethylene. Since there are two bonds forming here, we will have a double bond structure. Step 4: We are done with the octet fulfillment concept. So, what we can do is, we can take those electrons from the bottom and place them in the center between the two C atoms. But, the other central carbon atom lacks two electrons. Here, we can see that one carbon atom has its octet fulfilled(the Octet rule has been discussed before). Step 3: Now, that we have drawn the atoms by their symbols, let us denote the valence electrons by dots. Hydrogen atoms are going to take the outer positions. Step 2: Now, that we have found out the total valence number, we get to check which atom is less electronegative.įor hydrocarbons, we are always going to place the carbons in the center. ∴ the total number of valence electrons in one molecule of C2H4 In the case of carbon, we have four valence electrons each. Hydrogen is the first element in the periodic table, therefore it has only one valence electron. Step 1: How many atoms do we have in an ethylene molecule? The Lewis Structure of any molecule can be easily done if we follow certain given procedures. This is known as the octet rule or octet fulfillment. The atoms of the main groups tend to gain more electrons to attain the same valency of eight. If we see the last group, we can find out that all the elements are inert gases having eight electrons in their valence shells (except He which has two). The number of valence electrons of an atom is equivalent to its valency which in turn determines the combining capacity of the given atom. The outermost shell is known as the valence shell and the electrons present in that shell are known as valence electrons. The electron dot structure, widely known as Lewis Structure, is a skeletal diagrammatic representation of a molecule taking into account the constituent atoms and the valence shell electrons.īefore we jump right into this, we would like to introduce you to( or let’s say brush you up with in case you are already familiar) some really important concepts that will make your understanding of ethylene bonding way easier!Īn atom has a nucleus that is surrounded by negatively charged electrons which are present in different levels or shells. Going ahead, let us discuss this step by step. Now coming to ethylene, if we want to learn about it in a comprehensive manner, all we need to do to start is to understand its nature of bonding.įor a carbon-hydrogen bond, this is covalent in nature. Now, the atoms do not usually exist on their own in an isolated state, all we see around us are basically made up of atoms that have combined with each other to form molecules.ĭepending on the nature of atoms and their tendency to attract or repel another atom of a similar or different kind, we get resultant molecular compounds.Īnd this whole process of two or more atoms coming close and deciding to stay together is known as chemical bonding. How this whole universe is built up by several atoms? Have you ever wondered how unique and vastly diverse the universe is? Unsaturated hydrocarbons: These form double and triple bonds and are known as alkenes and alkynes accordingly.Saturated hydrocarbons: Saturated hydrocarbons also called acyclic straight-chain alkanes follow the structure H-(CH2)n.Straight-chains are the primary and most easily deciphered group of hydrocarbons. In organic chemistry, we find hydrocarbons of several types: straight-chain, cyclic, and even branched. So, it is important for us to learn about C2H4 in detail to understand the nature of straight-chain hydrocarbons in a better manner.Ĭarbon has a covalent nature when it comes to bonding with hydrogen and this leads to the formation of the different types of hydrocarbons that we see.įrom simplest ones like methane and benzene to some of the complex ones like natural rubber, we deal with several HCs in our daily lives. Whenever we have read about organic chemistry, we have come across this compound, haven’t we? Well, C2H4 is a simple straight-chain hydrocarbon that bears a sweet aroma and has a colorless form. In this article, we will talk about one of the most common and widely used hydrocarbons: Ethylene(C2H4).ĭo you know that this compound is even lighter than air?
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