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Use the letters only written in the Periodic Table given below to answer the questions that follow :(i) State the number of valence electrons in atom J. (ii) Which element shown forms ions with a single negative charge? (iii) Which metallic element is more reactive then R? (iv) Which element has its electrons arranged in four shells? |
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Answer» (i) Five valence electrons (ii) M (iii) T (iv) T |
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