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Question

Chemistry Question on properties of d block elements

The melting points of CuCu, AgAg and AuAu follow the order

A

Cu>Ag>AuCu > Ag > Au

B

Cu>Au>AgCu > Au > Ag

C

Au>Ag>CuAu > Ag > Cu

D

Ag>Au>CuAg > Au > Cu

Answer

Cu>Au>AgCu > Au > Ag

Explanation

Solution

All have d10d _{10} configuration. There is only 1e1 e ^{-}for metallic bonding. Now size of atoms or kernels increases down the group. Hence, metallic bonding weakness due to less attraction of electrons involved in metallic bonding. Ag<Au<CuAg < Au < Cu