InterviewSolution
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InterviewSolution
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16. (a) What are various limitations of Mendeleev's Periodic Table ? What was the basis ofclassification of elements in it ?(b) An element X' (2, 8, 1) combines separately with NO; and (SOJi. (Po radicalsWrite the formulae of the three compounds so formed. To which group of the periodictable does the element X' belong ? will it form covalent or ionic compound ? Why ? 5 |
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Answer» Thisisbecause hydrogen's characteristicsarevery similar to halogens and alkali metals. Other keylimitationsinMendeleev periodic table werethat the atomic number in thetable wasnot shown increasing in a regular pattern and the symmetry of thetable wasalso disturbed. Mendeleev Periodic Table – We all know that there are118 elementspresent in our periodic table. Out of these118 elements, 94 elements are natural elements and24 elementsare synthetic elements. Back in the year 1800, only30 elementswere known. 1. (i) X(NO3)2 (ii)XSO4 (iii)X3(PO4)2 (iv)Group II (v)It will form an ionic bond since it is a metal. |
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