E entgegen - Study guides, Class notes & Summaries

AQA A-Level Chemistry (3.3.4) – Alkenes. Exam Questions And Correct Answers Alkene definition - answerUnsaturated hydrocarbons. General formula of alkenes - answerCnH2n What is required somewhere in the structure of alkenes? - answerA carbon-carbon double bond. What is the arrangement of bonds around the C=C? (Shape and bond angle) - answerPlanar, 120 degrees. When do numbers needed to be added to the name? - answerWhen positional isomers can occur. What is stereoisomerism? - answerS...

©THEBRIGHT EXAM STUDY SOLUTIONS 8/22/2024 12:54 PM MCAT Organic Chemistry Exam Questions And Correct Answers What are the four rules for writing resonance structures? - answer1. Atoms must not be moved. Only electrons. 2. All resonance atoms must lie in the same plane. 3. Only valid Lewis structures are allowed. 4 . The number of unpaired electrons must remain constant. What are the two conditions for resonance? - answer1. An atom must have a P orbital or a lone pair of electrons. 2. ...

C=C double bonds are present in most organic and biological molecules.  To examine consequences of alkene stereoisomerism.  To focus on an important alkene reaction: electrophilic addition.