What are some interesting facts for the element cerium?

Answer:

the origin of the name was Ceres ( asteroid ) and it was discovered by W. Von Hasinger in 1803. it has 6 energy levels and is used for making aluminum alloys, cigarette lighters, incandescent gas mantles, petroleum refining, arc lighting. It is a metal. It's normal phase is solid, and it is classified in the rare earth family.

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