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Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?

1. metallic bonding
2. van der Waals bonding
3. ionic bonding
4. covalent bonding

Correct answer: metallic bonding

Solution

Metallic bonding produces solids that reflect light due to free electrons, have high melting points, and exhibit electrical conductivity that decreases with temperature due to reduced electron mobility.

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