Page 1 - 1. MIND MAP(IONSPOSITIVE&NEGATIVE IONSCALCULATION OF VALENCY OF IONS)
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SAI International School

                                                    Class-IX
                                             Subject- Chemistry
                                       Topic-Atoms and Molecules

           SubTopic- Ions (positive ion and negative ion), calculations of valency

                                                     of ions
                                                    MIND MAP





                                                                             CATIONS





                                                                        Formed by loss of electrons
                                                                        Carry +ve charge


                                                                        Smaller than parent atom

                                                                        Move towards Cathode
                                                                        during electrolysis


                      IONS






                                                                               ANIONS




                                                                       Formed by gain of

                                                                       electrons

                                                                       Carry -ve charge

                                                                       Larger than parent
                                                                       atomMove towards Anode
                                                                       during electrolysis

















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