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Actinoids are mostly attacked by which acid?

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in Chemistry – Class 12 by (188k points)
Actinoids are mostly attacked by which acid?

(a) Hydrochloric acid

(b) Nitric acid

(c) Sulphuric acid

(d) Boric acid

I had been asked this question in final exam.

This is a very interesting question from D and F-Block Elements in division D and F-Block Elements of Chemistry – Class 12

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The correct choice is (a) Hydrochloric acid

To elaborate: Actinoids are highly reactive metals especially in the finely divided state. All these metals are attacked by hydrochloric acid but the effect of nitric acid is very small due to the formation of a protective oxide layer on their surface.

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