Which battery uses the metal with the least dense metal?

Name: Which battery uses the metal with the least dense metal?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Lithium-ion batteries use lithium, which is the least dense metal among the options listed. Nickel-metal hydride and nickel-cadmium batteries use nickel, which is more dense than lithium. Lead-acid batteries use lead, which is much more dense than lithium, and dry cell batteries typically use zinc as their outer casing, which is denser than lithium as well.

Which Battery Uses the Metal with the Least Dense Metal