Question

give reason for the following a) gold and platinum are expensive b) graphite is used to make electrodes c) copper loses its shine when exposed to moist air

Answer 1

A. Gold is rare and platinum is rarer and are precious metals because they are so rare.

B. because it has high delocalization. making valence electrons move more and conduct electricity

C. Because of passivization.

Answer 2

Answer:

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