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Bhaskar Negi

Class 12th
Chemistry
2 years ago

what is gold no.

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Sundaram Singh

2 years ago

The Gold Number is the minimum weight of a protective colloid required to prevent the coagulation of 10 ml of a standard hydro gold sol when 1 ml of a 10% sodium chloride solution is added to it. It was first used by Richard Adolf Zsigmondy in 1901

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