The peremeter will be 20√13
According to the periodic table, carbon's molar mass is 12.011 grams per mole (that's the small number under the element). So, just multiply like this to get the answer:

So, there are approximately 0.208 grams in 2.5 moles of carbon.
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Answer:
answer is
Explanation:
Gallium because it has the properties which you have mentioned