Question

Metal sulphides occur mainly in rocks and metal halides in lakes and seas. explain

Answer 1

Best Answer
Because halides tend to be soluble in water and so have dissolved out of the rocks and into the lakes/seas over time. Though, of course, as the seas evaporate and recede there can be enormous deposits of these halides as solids again e.g. the enormous underground deposits of Rock Salt in Cheshire and in Poland.
Sulphides on the other hand tend to be very insoluble and remain in the rocks.
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