Identify the metal X and Y from the characteristics mentioned in the table given below.
XYDoes not react with water and oxygenBest conductor of electricityHighly ductile materialUsed to make ornamentsMost malleable substanceBest conductor of heatX:- Gold
Y:- Silver
X:- Gold
(a) It does not react with oxygen and it is chemically unreactive. Therefore it is called noble metal.
(b) It is a highly ductile material as 1 g of gold can be drawn into a wire of length 2 km.
(c) It is the most malleable metal as it can be beaten into thin sheets.
Y:- Silver
(a) It is the best conductor of heat and electricity.
(b) Gold, silver and platinum are used to make ornaments because these metals are chemically unreactive. Due to this these metals do not undergo corrosion and maintains their metallic lustre for a longer time.