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Drive down any three characteristic of modern periodic table
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Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
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If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?
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Give one example of a pure (exact) number and of an estimated (measured) number.
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What are the two main types of exact numbers?...
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