natethomo2006 natethomo2006

22-10-2021
Chemistry

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9. An element Q with electronic configuration 2.8, 2 reacts with elements R. with electronic configuration 2, 8, 7 to form an ionic compound. The likely formula of this compound is:

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rasikasamarasinghe19 rasikasamarasinghe19

02-11-2021

Answer:

QCl2

Explanation:

Q should belong to group 2 so valency is 2

R should belong to group 17 so valency is 1

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