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4) B the periodic table has been arranged in increasing atomic no. Which is equal to the no. Of electrons, take a look at a periodic table....5) D the nucleon no is defined as the addition of the no. Of protons and no. Of neutrons.....
 
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There is one mole of CUSO4 ( in 160g)....this also means that there is 1 mole of S in that 160g CUSO4....so the answer is the Mr of S in grams. So S has a Mr of 16 so in one mole there is 16g...so the answer must be A
 
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There is one mole of CUSO4 ( in 160g)....this also means that there is 1 mole of S in that 160g CUSO4....so the answer is the Mr of S in grams. So S has a Mr of 16 so in one mole there is 16g...so the answer must be A
but the ans in ms is B.Bcz the Mr of S is 32
 
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