Periodic Classification Of Elements
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In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Whi...
By romiroy12, 5 years ago
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Upto which element, the Law of Octaves was found to be applicable
By romiroy12, 5 years ago
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The elements of group 16 are called (a) Chalcogens (b) Halogens (c) Pnicogens (d) Noble ga...
By romiroy12, 5 years ago
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487
Which of the following is correct order of atomic size? (a) Cl < F < Br < I (b) F...
By romiroy12, 5 years ago
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An element has atomic number 17. To which group, period does it belong? It is metal or non...
By romiroy12, 5 years ago
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