参考资料:
https://en.wikipedia.org/wiki/Prices_of_elements_and_their_compounds
https://en.wikipedia.org/wiki/Element_collecting
https://www.reddit.com/r/BeAmazed/comments/a4cycw/the_first_thing_you_notice_when_you_walk_into/
https://www.quora.com/Why-does-the-element-californium-cost-27-millions-dollars-a-gram
https://www.youtube.com/watch?v=diP_ngebIxI
https://www.youtube.com/watch?v=ZiWlthrtneU&t=55s
https://www.youtube.com/watch?v=ZhvRmbpkx9U&t=11s
https://www.youtube.com/watch?v=b3TrEGlpttI&t=7s
https://www.youtube.com/watch?v=Yg13Xuh9SkQ
https://www.youtube.com/watch?v=Fg2WzCzKpYU&t=11s
https://www.youtube.com/watch?v=Kkd2bYAVtOU
https://www.youtube.com/watch?v=vhPu-3b0FnY&t=328s
https://www.youtube.com/watch?v=RcQVJ4lb8r0&t=5s
https://www.youtube.com/watch?v=Duk20wEVgJQ&t=198s
https://www.youtube.com/watch?v=apxnSSSQmR0&t=424s
https://www.youtube.com/watch?v=G9rH20lOE1c&t=16s