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Explain the following: The electronic...

Explain the following:
The electronic configuration of metal A is 2,8,1 and that of metal B is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.

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CHETANA PUBLICATION-Metallurgy-EXAMPLE
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  18. How can corrosion of metals be prevented?

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  19. How are moderately reactive metals extracted?

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  20. Explain electrolytic reduction of alumina with the help of diagram.

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