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← ScienceWhich outcome occurs when core electrons undergo relativistic effects in gold?
A)Yellow color arises from interband transitions✓
B)Decreased conductivity due to increased scattering
C)Increased paramagnetism from unpaired spins
D)Weakened metallic bond strength decreases elasticity
💡 Explanation
When relativistic effects cause the 1s orbital to contract gold, *interband transitions* shift into the visible, causing absorption of blue light and scattering of yellow photons from the surface. Therefore, gold is yellow, rather than colorless like silver, because of relativistic contraction of orbitals.
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