The melting points of Cu, Ag and Au follow the order (a) Cu > Ag > Au (b) Cu >Au > Ag (c) Au > Ag > Cu (d) Ag > Au > Cu

The melting points of Cu, Ag and Au follow the order____________.

(a) Cu > Ag > Au

(b) Cu >Au > Ag

(c) Au > Ag > Cu

(d) Ag > Au > Cu

Expert Solution

Answer : (b) Cu >Au > Ag

Explanation :

In practical approach the melting points of above material as follows

Copper (1085°C)
Gold (1064°C)
Silver (962°C)

Based on the periodic table properties of melting point :

Hence the melting point decreases from copper to silver, but the melting point of gold becomes even higher than silver due to its higher density that happened due to contraction.

b) Cu > Au > Ag

Rakesh answered 2 years ago

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