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It is due to the absence of transition of electrons within orbitals because carbon does not posses the d-orbitals, but some organic compounds also have colours as different organic dyes , aniline, and other aromatic compounds.

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14y ago
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2w ago

Organic substances are often colorless or white because they do not contain any metal ions that can contribute to color. The absence of any chromophores, which are groups of atoms responsible for absorbing certain wavelengths of light, also leads to the lack of color in organic substances. Additionally, the molecular structures of organic compounds may scatter light in such a way that they appear colorless or white to the human eye.

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14y ago

Because they don't have metallic ions in which transition of electrons is possible.

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Q: Why are organic substances colorless or white?
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