We will study in this chapter specify the metallic and non-metallic characteristics and increase of atomic numbers and mass number. This decrease is observed from left to right and up to down, while the physical and chemical properties start altering in atomic numbers. Students by a thorough reading of Chemistry Chapter 3 Class 11 Notes will understand that elements of the similar group and periods start showing alike chemical properties. This is caused by the presence of valence shell in an electronic arrangement. You can also view or choose to download this notes for free of cost to study your own convenience.
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