Question

Solids cannot propohate through

Answer 1

Answer:

Transverse waves cannot propagate in gases because there are no forces to cause motion perpendicular to the direction of the wave. A transverse wave propagates in a solid because each atom of the solid has an "equilibrium location" where the forces on it from all its neighboring atoms balance.

Explanation:

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Answer 2

Answer:

Iodine is a non-metal but it is lustrous.