Calcium and magnesium are found in combined from while gold and Platinum are found in free state give reason
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Because calcium and magnesium are more reactive than gold and platinum. That's why they are found in combined state and gold and platinum are found in free state.
Besides gold and platinum are among lowest elements in reactivity series whereas calcium and magnesium occur in higher elements in reactivity series.
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2
Answer:
This is because the calcium and magnesium are high reactive elements that is why they only exist in combined state. Whereas gold and silver are low reactive element hence do not exist in combine state and are found in free state
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