A. Iron rods
B. Graphite rods
C. Cadmium rods
D. Platinum rods
Correct Answer: Cadmium rods ✔
Last Updated: January 20, 2021
A. Iron rods
B. Graphite rods
C. Cadmium rods
D. Platinum rods
Correct Answer: Cadmium rods ✔
Last Updated: January 20, 2021