They possess distinct colour and odour. Each carbon atom of cyclohexane is bonded to two types hydrogens. These are generally volatile and inflammable. All the homologues contain same functional group. A Hydrocarbon is a compound which is made of hydrogen and … (formicidae)]. (f) Specific rotation It is given by the expression. About Mrs Shilpi Nagpal All the members can be prepared by almost similar methods. Organic chemistry has a lot of name reactions which you should remember. Class 11 Chemistry Organic Chemistry: IUPAC system (Geneva system) IUPAC system (Geneva system) It is international union of pure & applied Chemistry. Priority is given to the atom having high atomic number e.g., in CI, Br and F, the priority order is Br > CI > F. 2. 11 standard Chemistry syllabus consists of topics from both inorganic and organic chemistry and comprises of total 14 chapters. Some Basic Concepts of Chemistry . 0. -OR, -OCOR, -NH2,-NHCOR etc. CBSE quick revision note for class-11 Chemistry, Physics, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. (if nucleophilic sites (or attacking atoms) are different nucleophilicity varies inversely with electronegativity). These are obtained by photolysis or pyrolysis. In these reactions, the reagent adds to the substrate molecule. It involves delocalisation of σ electron of a C – H bond of an alkyl group attached directly to an atom of unsaturated system or to an atom with an unshared p-orbital. Here. Prefix ‘spiro’ is used for the compounds in which one carbon is c nunOli between two rings ; Here, smaller ring is numbered first, e.g.. Prefix ‘bicycle’ is used for such compounds e.g.. These reactions are given by carbonyl compounds e.g.. CBSE Class 11 Chemistry Notes : General Organic Chemistry. The groups present at the double bonded carbon atoms, must be different. e.g.. (ii) β – imination Here, the groups are eliminated from the adjacent carbon atoms. These are highly reactive planar species with Sp2 hybridisation. Central atom of functional groups should be less electronegative than surrounding atoms or groups to show – R effect. A carbon atom can combine with other carbon atoms by single, double or triple bonds. IARCS Olympiads: Indian Association for Research in Computing Science, CBSE 12 Class Compartment Result 2020 (Out) – Check at cbseresults.nic.in, CBSE Class 10 Result 2020 (Out) – Check CBSE 10th Result at cbseresults.nic.in, cbse.nic.in, Breaking: CBSE Exam to be conducted only for Main Subjects, CBSE Class 11 Chemistry Notes : Hydrocarbons. Key Notes for Chemistry Subject for CBSE Class 11 Students are given here. chlorine, sulphur, nitrogen and phosphorus. CBSE Class 11 Chemistry Notes are Best ever notes prepared by our awesome team members. These may be gases, liquids or solids. ... Chemical Bonding and Molecular Structure Class 11 Revision Notes. Electron donating groups producing. There are two main types of isomerism i.e.. (c) Conformers of 3 – fluoro butan – 2 – ol. They deactivate the benzene ring towards the electrophilic substitution reaction. That’s why their chemical properties are almost similar. These can further be E1 or E2 reactions e.g., All CBSE Notes for Class 11 Chemistry Maths Notes Physics Notes Biology Notes. It can be done by mechanical method, biochemical method and chemical method. In this type of isomerism, compounds have same molecular formula but different structures. Electron withdrawing group (E.W.G.) Electrophiles or Electrophilic Reagents. Generally asymmetric or chiral compounds show optical isomerism Chiral compounds are those which contain chiral centre i.e., chiral carbon, the carbon all the four valencies of which are satisfied by four different groups. + R effect are ortho and para directing. Organic Chemistry-Some Basic Principles 13. the first organic compound synthesised in laboratory, by Wohler. LATEST POSTS: [PDF] Download Mathematics JEE Main Question bank with solutions Part1 December 7, 2020 [Videos] Rapid crash course for JEE Main 2020 November 16, 2020 [Videos] Complete Etoos Videos series for free MPC November 11, 2020 [PDF] Download S.B.Mathur solved problems in Physics November 4, 2020 [PDF] Read JH Sir Physical chemistry Notes … Chemistry_Revision_Notes for BOARD Exams https: ... Organic Chemistry Class 11 ncert - Some Basic Principle and Techniques 01 I Sigma,Pi I Hybridization - Duration: 49:08. These cbse revision notes are arranged subject-wise and topic-wise. Carbon bearing a positive charge is called carbocation and carbon bearing negative charge is called carbanion. It is the oldest system in which names are derived from source or some property. more is the basic nature. The compound having same molecular formula but differ in properties are known as isomers and the phenomenon is known as isomerism. This may be of + E type (when displacement of electron pair is away from the atom or group) or of – E type (when the displacement is towards the atom or group). CBSE Class-11 Revision Notes and Key Points. Furthermore, these compounds are exceptionally stable because of the small size of carbon. Chapter 6. 1. branching if present gets the lowest number. If two end are similar number of optical active isomers = 2n – 1 (if n = even) and meso form = 2n – 2 / 2. Chapter 1. It involves delocalisation of 1t electrons. 1. The notes have been prepared by experts who know which topics are essential within the syllabus. Your email address will not be published. General Organic Chemistry: Bond Fission: a) Homolytic fission: Each atom separates with one electron, leading to the formation of highly reactive entities called radicals, owing their reactivity to their unpaired electron. The hydrides of carbon (hydrocarbons) and their derivatives are called organic compounds. are said to have electron attracting or negative inductive effect (- I) while that having, smaller electron affinity than hydrogen are said to have electron releasing or positive inductive effect (+ I) e.g.. gave death blow to the vital force theory. These are very useful summary notes with neatly explained examples for best revision of the Chemistry book. The following species behave as electrophiles : (i) All non-metal cations and metal cations which have vacant d- orbitals. In such formulae, it is assumed that required number of H-atoms are present, where ever, they are necessary (to satisfy tetravalency of carbon) e.g.. Primary prefixes are cycle, bicycle, di, tri, tetra, tries. (d) Conformers of cyclohexane The cyclohexane ring can assume many shapes due to rotation around C-C bonds. With these notes, students can further stay ahead in the class. These are of two types : (a) SN1(Nucleophilic substitution unimolecular) reaction is a two step process, e.g.. (b) SN2 (Nucleophilic substitution bimolecular) reaction is a single step process e.g.. Chapter 7. Your email address will not be published. Double and triple bonds are also functional groups. 7. CBSE Class 11 Chemistry Notes: General Organic Chemistry 1. While there are a lot of topics to cover, students can access free CBSE revision notes for class 11 Chemistry chapter 12 – some basic principles and techniques given here and get a clear understanding of all the important concepts. Stereoisomerism is of three types : optical isomerism, geometrical isomerism and conformations. we are following the 1993 recommendations of IUPAC nomenclature. 1. When all the properties of a molecule cannot be shown by a single structure and two or more structures are required to show all the properties of that molecule, then the structures are called resonating structures or canonical forms and the molecule is referred as resonance hybrid. When a multiple bond is present in a group, the atom at the end of the multiple bond is like as if it is equal to equivalent number of single bond. States of Matter . 1. e.g.. e.g.. (ii) Nucleophilic addition reactions In these reactions, nucleophile is added to the substrate in the rate determining step. In bicycle compounds, numbering is done first in larger ring, then in smaller ring. Download CBSE Revision Notes for CBSE Class 11 Chemistry Organic Chemistry Some Basic Principles and Techniques in PDF format. Then Hybridised orbitals contain no electrons and a hybridised orbital contains two electrons : Singlet carbene has bent structure and is less stable than triplet carbene. 4. Organic Chemistry – Some Basic Principles and Techniques class 11 Notes Chemistry. See more fantastic resources made by SAVE MY EXAMS today! They have different physical and chemical properties. These are neutral monovalent nitrogen species in which N atom has two unshared pair of electrons with a monovalent atom or group attached. Thus, it forms more compounds than the others. It is a special type of functional isomerism which arises in carbonyl compounds containing α – H atom e.g.. Here, Cl has – I effect and alkyl group has + I effect. Central atom of functional groups should be more electronegative than the surrounding atoms or groups to show +R effect. In it, every fold and free terminal represents a carbon and lines represent the bonds. Longest chain rule The chain containing the principal functional group, secondary functional group and multiple bonds as many as possible is the longest possible chain. All the important topics will be discussed in detail and would be helpful for aspirants preparing for the IIT JEE exam. e.g.. (iii) R-S system This system was proposed by Cabo, Ingold and Prelog. Word root: Suffix: Suffix two types:- 1. 4. 1. Heterolytic fission generally takes place in polar covalent molecules but in non-polar molecules, it takes place in the presence of catalyst like AiCI3) (anhy. Note – We will send a pdf in your email account. Filed Under: Chemistry, Class 11, Organic Chemistry - Some Basic Principles and Techniques Tagged With: 3 basic primary suffix, IUPAC system, Nomenclature, prefix, primary prefix, primary suffix, rules for IUPAC Nomenclature of organic compounds, secondary prefix, secondary suffix, suffix, Trivial or common name, word root. R is called alkyl group, it contains only single bond; alkenyl group if contains double bond and alkynyl group if contains triple bond. Reactivity order of carbon atoms is as follows 3° > 2° > 1°. (c) Meso form The compound in which half part of a molecule is the mirror image of other half, is called meso form. Naming the prefixes and suffixes Prefix represents the substituent and suffix is used for principal functional group. General Characteristics of Organic Compounds. These reactions are given by alkenes and alkynes. JEE Mains, JEE Advance, Class 11, Class 12 April 22, 2019. in CBSE. This effect may be of + R type or – R type. by Anuj William. Chapter 3. acetic acid (acetum = vinegar), oxalic acid (oxalic), malic acid (pyrus malus), citric acid (citric), formic acid (obtained from red ant Non-polar structure is more stable than the polar structure. On this basis these reactions are of two types : (i) Electrophilic substitution reactions When leaving group is replaced by an electrophile, the reaction is called electrophilic substitution reaction. Following rules are used to write the IUPAC name of an organic compound. Handwritten Notes, NEET 2020, NEET 2021, NEET Aspirants, Physical Chemistry, Organic Chemistry, Inorganic Chemistry, Kota notes, Topper Notes, NEET MOST WANTED notes, Allen Notes, Aakash Notes, Disclaimer: This blog does no longer very own this … Generally, a meso compound have two or more chiral centres and a plane of symmetry. (e) Atropisomers These are the isomers that can be interconvertible by rotation about single bond but for which the rotation barrier is large enough that they can be separated and do not convert readily at room temperature. The branch of chemistry which deals with these compounds is called organic chemistry. The increase in electron-electron repulsion upon rotation from staggered to an eclipsed conformation is referred to as torsional strain. The structure with maximum charge separation is more stable. 2. In staggered conformation. Learners at any stage of their preparations will be benefited from the course. 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