Valaency Of Elements
When atoms of one element combine with the atoms of another element to form a compound,they do so in fixed numbers depending upon the capacities of the atoms to form bonds.The capacity of an atom of an element to form chemical bonds is known as its valency.The valency of an element decides the number of other atoms which can combine with one atom of that element. For example, the valency of carbon is 4 and that of hydrogen is 1. So, one atom of carbon can combine with four atoms of hydrogen to form a methane molecule, CH4. The valency of an element is also known as "valence" of the element,"combining capacity" of the element or "combining number" of the element.The valency of an element is decided by the "number of valence electrons" in its atom.In other words,the valency of an element is decided by the "number of outermost electrons" in its atom. This is discussed below.
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Structure of the Atom - Notes
1. Drawback of Rutherford’s Model of the Atom
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2. Rutherford’s Experiment - Discovery of Nucleus
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3. For the symbols H, D and T,tabulate three sub-atomic particles found in each of them.
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5. Structure of The Atom - Study Points
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10. Arrangement Of Electrons In The Atoms
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12. Limitations of Rutherford's model of the atom
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16. All about Names of the Chemical Elements
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17. How to learn naming Chemical Formulae?
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21. Comparison between Proton, Neutron and Electron
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22. Electronic Configurations of First 20 Elements
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26. Rules for writing of distribution of electrons in various shells for the first 18 elements
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36. The Physical Properties of the Isotopes of an Element are Different
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39. All the Isotopes of an Element Have Identical Chemical Properties
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42. Relationship Between Mass Number and Atomic Number
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44. Valaence Electrons (Or Valancy Electrons)
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45. Electronic Configurations of Noble Gases (or Inert Gases)
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48. Reason for the Fractional Atomic Masses of Elements
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49. Applications of Radioactive Isotopes
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