Final answer:
The nurse should administer 2 tablets of metronidazole to the client.
Step-by-step explanation:
To determine how many tablets of metronidazole should be administered, we need to consider that the client received a prescription for 1 gram of metronidazole and the medication is available in 500 mg tablets. To find the number of tablets, we divide the prescribed dose (1 gram) by the strength of each tablet (500 mg):
1 gram รท 500 mg = 2 tablets
Therefore, the nurse should administer 2 tablets to the client.