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Ques. Three elements X, Y, and Z with their atomic numbers are given below:ElementAtomic NumberX16Y18Z19Examine the above data and answer the following questions:A) How many valence electrons are present in Y? What is its valency?B) Write the position of X and Z in the Modern Periodic Table.C) Write the molecular formula formed between X and Z |
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Answer» a) 1 b) 16TH group and 3rd period , 18th group and 3rd period c) x-sulphar and z- potasium product is pso4 |
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