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CBSE Class 9 Answered

Why Ruthrford selected a gold foil for his experiment?
Asked by Piyush Nema | 09 Feb, 2011, 03:55: PM
Expert Answer
Dear Student
 
Rutherford used the gold foil because:
 
1. It is used because gold was known to be a very inert element.

2. The use of gold had nothing to do with its reactivity, any more than the experiment had any connection to chemistry. Rutherford wanted to fire alpha particles through the foil. Alpha particles are not very penetrating; a sheet of notepaper will stop most of them. To achieve a reasonable percentage of penetration the foil needed to be really thin.

Gold is highly malleable; gold leaf can be made in thicknesses around 100 nm or 4 micro-inch. It was the best material for the job.

We hope that clarifies your query.
Regards
Team
Topperlearning
Answered by | 09 Feb, 2011, 09:41: PM
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