Q. With reference to silver metal, consider the following statements:

1. It exhibits the highest electrical conductivity among all metals.
2. It reflects almost all wavelengths in the visible spectrum.
3. The metal is found in the Earth's crust only as an alloy and not in pure, free elemental form.

Which of the statements given above is/are correct?
Answer: Only 1 and 2
Notes: Silver has the highest electrical conductivity and also has excellent reflectivity in the visible spectrum, making statements 1 and 2 correct. However, statement 3 is incorrect as silver is found both as a free native element and as an alloy in the Earth's crust. Thus, only statements 1 and 2 are correct.