Question

1.Which elements never found in nature in free state?
2.Which elements mainly found in earth crust mainly oxides,sulphides and carbonates?
3.Which elements found even in free state in nature?
4.Write the names elements belongs to high reactivity metals and moderates reactivity metals?​

Answer 1

Answer:

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Answer 2

The answers to the given questions are as follows.

• Alkali metals like potassium, Sodium, calcium, magnesium are never found in nature in free state.
• Elements which are mainly found in earth crust mainly oxides, sulphides and carbonates are Copper and Silver.
• Elements found even in free state in nature are Gold.
• The names elements belongs to high reactivity metal is Aluminium and moderates reactivity metals Hg, Pb.