An Important Discussion
Before we can understand the formation of ions, we should know the various particles which are present in an atom (This will be studied in detail in the next chapter). >An atom contains electrons, protons and neutrons. Each electron has 1 unit negative charge and each proton has 1 unit positive charge. Neuhxmhas no electric charge, it is neutral. Every atom normally contains an equal number o negative electro and positive protons' which balance the charges in the atom and make an atom electrically neutral.,however, one or more electrons are either removed from an atom or added to an atom, then the atom has either less number of electrons than normal or more number of electrons that normal, and it gets an electric charge. The atom becomes an ion.,
1.If an atom has less electrons than normal, then it gets positive charge (because the number of negative electrons becomes less than the number of positive protons).
2.And if an atom has more electrons than normal,then it gets negative charge (because then the number of negative electrons becomes more than the number of positive protons).Please note that it is only the electrons which can be transferred from one atom to another in the formation of ions. Protons cannot be transferred from one atom to another because they are present deep inside the atom in its nucleus. Keeping these points in mind, we will now explain the formation of ions.
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Atoms and Molecules - Notes
2. Monovalent Cations (Cations Having a Valency of 1+)
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3. Divalent Cations (Cations Having a Valency of 2+)
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4. Trivalent Cations (Cations Having a Valency of 3+)
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6. an example, let us give the significance of symbol C
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7. Formulae of Some Molecular Compounds
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9. Explanation of the Law of Conservation of Mass
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10. Molecular Formulae of Some Common Elements
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11. 2. A Negatively Charged Ion is Known as Anion
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13. As an example, let us give the significance of the formula H
2O
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14. Simple Ions and Compound Ions (Polyatomic Ions)
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21. Gram Atomic Mass And Gram Molecular Mass
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28. 1. A Positively Charged Ion is Known as Cation
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34. Divalent Anions (Anions Having a Valency of 2-)
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35. Molecular Masses of Some Common Elements
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37. Explanation of the Law of Constant Proportions
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39. Significance of the Formula of a Substance
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42. Symbols Derived from Latin Names of the Elements
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45. Valencies of Some Common Metal Elements Valencies of Some Common Non-Metal Elements
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46. Atomic Masses of Some Common Elements
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47. Writing Of Formulae Of Molecular Compounds
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50. Writing Of Formulae Of Ionic Compounds
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