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 Form 2 Chemistry Sample Revision Questions With Answers

Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.

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Answer Text:
X is the metal, its electronic configuration is 2.8.1 while that of Y is 2.8.7.This means X will react by losing an electron while Y reacts by gaining an electron.


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