true or false. 1) metal have a characteristic colour
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Answer:
true
Explanation:
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Metal has a characteristic color is a TRUE statement.
Explanation
METAL -
- Metals are the substances that conduct heat and electricity.
- In the periodic table, metals are placed on the left side.
- Metals absorb radiations and re-emit the different waves showing different characteristic colors.
- The color of different metals can be explained by band theory.
- When electrons excite from one subshell to another, they emit energy in the form of radiations.
- These radiations fall in the wavelength of visible light, providing color to the particular metal.
- The silver color of iron, and silver is because the efficiency of absorption and emission of metal is equal to the optical frequencies.
- The Aluminium powders appear black the emitted light is reabsorbed by the surrounding powder particles leaving no light to reach the viewer's eyes.
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