उत्तर : 3. "Aurum"
व्याख्या :

Answer: C) Aurum Explanation: The Chemical name of Gold is Aurum with symbol Au with atomic number 79 and a group 11 element. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal.