Chemistry, asked by TheLoneWolf606, 9 months ago

Why do the iron pillar of Delhi never rusts?

Answers

Answered by Pikachu07
2

Pillar's resistance to corrosion is due to a passive protection film at the iron rust surface. ... It is due to the formation of an even layer of crystalline iron hydrogen phosphate hydrate due to the high content of phosphorus in the iron.

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