8. Study the given table and answer the following questions. i) Name metals and non-metals. Elements ii) What is the valency of A and why? iii) Write the name and symbol of all the elements. iv) Write down the molecular formula of the compound formed by the combination of A and B; and C and B. A B C D Electronic configuration 2,8,1 2,8,7 2,8,8,2 2,8 v) Which element is more active between A and D? vi) Name the elements which can lose the valence electron to become stable.




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