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Category: chemistry

Here you can see random topics related to chemistry.

chemistry 0

Which set of elements has a strong tendency to form cations? Or which of the elements are the most electropositive elements?

The elements belonging to Group 1 and group 2 of periodic table has the strong tendency to form cations. The reason behind this tendency is that the elements belonging to group 1 and 2 have one and two valance electrons respectively. By loosing the valence electrons, they will aquire noble gas configuration. It is easy to release 1 and 2 […]

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Perkin reaction

Perkin reaction This reaction is used in the synthesis of β-aryl-acrylic acid. This reaction is mostly used for the prepration of cinnamic acid. Coumerin, a flavouring agent is also prepared by this method.

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What is the inert pair effect?

This is the which arise due to the inability of inner electrons to take part in the chemical reactions. For example in case of group 15 we have Phosphorus, Arsenic , Tin and Bismuth. They all show the oxidation states of +3 and  +5, but as we move down the group we will see that the +3 oxidation state becomes […]

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Why is breaking of C-H bond given more preference over C-C bond though the bond energy of the latter is less than the first one?

In case of hydrocarbons , the c-c bond is normally safe due to following two reasons :- Difference between the electronegativity of Carbon and Hydrogen. Due to this reason the electrons of the shared pair stays closer to the C-atom which makes it easy to break the C-H bond and release hydrogen as hydronium ion H+ . 2. The carbon […]

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Types of covalent bonds

On the basis of polarity , the covalent bonds can be of two types :- 1 Nonpolar covalent bond When covalent bond is formed between two similar atoms for example between hydrogen and hydrogen H2, between oxygen oxygen O2, between chlorine chlorine Cl2  , the shared pair of electrons is attracted by both atoms  with an equal force so there […]

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Characteristics of a lone pair

What are the characteristics of a lone pair? Characteristics of a lone pair Lone pair are the pair of electrons that do not take part in any chemical bond. They affect the symmetry of molecule or the shape of molecule as they interfere with the other electrons of the molecule . The electrons of lone pair repel the other bond […]

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Banana Bonds

What is a ”three centre two electron bond”? These are the type of covalent bonds in which overlapping of orbitals of three atoms take place but sharing only two electrons. These type of bonds that are found in electron deficient molecules. for example in case of BF3 , the molecule exists as a dimer that is B2F6 . Here the […]

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WHY THE IONIC REACTIONS ARE FASTER?

How are reactions related to chemical bonds? The type of bond has a great effect on the rate of reaction or speed of reaction. Here we are going to discuss why and how it happens, First of all in case of ionic compounds:- Lets take example of Sodium hydroxide and Hydrochloric acid NaOH (aq) + HCl (aq) →  NaCl + […]