What changes in colour are observed, as the size of particles increases in a red colour finest gold sol?
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it seems to be first recognised as green and slowly turns to fine sol
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Tiny particles of gold (one hundred nanometers in diameter) are called goldnanoparticles, which are very useful. These goldnanoparticles produce vibrant colours. When these goldnanoparticles are suspended in solution solution appears red and as particle size increases solution turns pale blue, purple and colourless.
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