Question

Question 9 (5 points)

The iron triad of transition metals includes____
iron, zinc, and copper
cobalt, iron, and nickel
copper, silver, and gold,
zinc, cadmium, and mercury

Answer 1

It's "Iron, Cobalt, and Nickel."

Step-by-step explanation:

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Answer 2

b. cobalt, iron, and nickel

Step-by-step explanation: