A solid which is not transparent to visible l | vedclass

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(C) The property of increasing conductivity with an increase in temperature is a characteristic feature of semiconductors.Semiconductors are typically

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Covalent bonding

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(C) The property of increasing conductivity with an increase in temperature is a characteristic feature of semiconductors.Semiconductors are typically formed by covalent bonding (e.g.,Silicon,Germanium).Metals (metallic bonding) show a decrease in conductivity with an increase in temperature.Ionic solids are generally transparent to visible light and are insulators.Therefore,the solid described is formed by covalent bonding.

$A$ solid which is not transparent to visible light and whose conductivity increases with temperature is formed by

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