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 ?
A
Metallic bonding
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B
Vander Waal's bonding
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C
ionic bonding
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D
covalent bonding
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Solution
The correct option is A Metallic bonding For a metal, conductivity decreases with increase in temperature. Also metal has higher melting point.