Final answer:
The reaction between Au and Pd(NO3)2 does not occur. Gold is useful in certain applications because of its resistance to corrosion and malleability. Correct option is a.
Step-by-step explanation:
The reaction between Au and Pd(NO3)2 can be predicted using the activity series. Gold (Au) is less reactive than palladium (Pd), so gold will not displace palladium from its compound. Therefore, the correct answer is option B) No reaction. The balanced chemical equation for the reaction is:
Au + Pd(NO3)2 → No reaction
Gold is a relatively useful metal for certain applications because of its resistance to corrosion and its malleability. This makes gold suitable for jewelry and electronics.