InterviewSolution
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InterviewSolution
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(i) An element has atomic number 13. In which period and groupit should be placed?(i) What was the basic of the Mendeleev's classification ofelements?. |
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Answer» the electronic configuration of the given element = 2,8,3it belongs to group 13 as its valence shell contains three electrons andit belongs to 3rd period as it contains three shells Mendeleev classifiedthe then known 56 elements on thebasisof their physical and chemical properties in the increasing order of the atomic masses, in the form of a table.Mendeleevhad observed that properties of the elements orderly recur in a cyclic fashion. |
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