Transition and Inner Transition Elements — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryTransition and Inner Transition Elements2 Marks
Question
How do metals occur in nature?
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Answer
In nature, few metals occur in earth’s crust in free state or native state while other metals occur in the combined form.
$(1)$ Elements in free state or native state : The metals which are non$-$reactive with air, water, $CO_2$ and non$-$metals occur in free state or native state. For example, gold, platinum, palladium occur in free state. Metals like $Cu, Ag$ and $Hg$ occur partly in the free state.
$(2)$ Combined form : The metals which are reactive occur in the combined state with other elements forming compounds like oxides, sulphides, sulphates, carbonates, silicates, etc.
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