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Which of the following bonds is responsible for thermal conduction?

 # Which of the following bonds is responsible for thermal conduction?
A. Ionic bond
B. Van der Waal bond
C. Metallic bond
D. Covalent bond


The correct answer is C. Metallic bond.

The free electrons give the metal its characteristically high thermal and electrical conductivity. These electrons absorb light energy, so that all metals are opaque to transmitted light. The metallic bonds are also responsible for the ability of metals to deform plastically. The free electrons can move through the lattice, whereas their plastic deformability is associated with slip along crystal planes. During slip deformation, electrons easily regroup to retain the cohesive nature of the metal.

Reference: PHILLIPS’ SCIENCE OF DENTAL MATERIALS, Anusavice, Shen, Rawls, 12th Edition, Page No: 19


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