Question

What is the number of known elements? 

   What is the number of known elements?
Chemistry
Chemistry
Raymond Chang, Jason… 14th Edition
Chapter 1, Problem 48 ↓
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What is the number of known elements?
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Transcript

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00:01 If you look at a periodic table, you can see that from start to finish, everything is numbered by atomic number, and there are no gaps anymore, at least as far as 2020.
00:17 Now, as you can see, the last element on here, which should actually be updated with its proper atomic symbol, is number 118.
00:29 Therefore, there are 118 elements that actually exist...
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