4. Assertion Elements Pt, Ag,noble gases, etc. occur in native state in nature.
Reason Elements which are attacked by moisture, oxygen and CO2 of air occur in
native state.
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25
Answer:
assertion is correct
reason is wrong
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Answered by
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Assertion is true for given statement while reason is wrong.
Pt and Ag in question refers to platinum and silver. The mentioned elements like platinum, silver and noble gases are found in nature in native state.
The reason for occurrence in such form is due to their low reactivity. They do not react with environmental conditions like moisture, oxygen, and carbon dioxide.
Other elements, which easily react with environmental conditions are found as ores. Example ores of iron.
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