Gold and platinum are even known as noble metals. Type 1 for true and 0 for flase.
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Solution
These are the reasons for use of Platinum, Gold and Silver in making jewelry :-
1. Platinum, Gold and Silver are placed at the bottom of the activity series and thus are very little reactive in nature. Gold and platinum are even known as noble metals.
2. They are not affected by air, water and even by chemicals.
3. Since they have bright luster jewelry made from them would be sparkling and attractive.