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Did anyone else get the periodic table elements that must add up to 200 atoms? I’m not sure, but I think it was impossible since my captcha included an “Nd”.
6 points
You can change the captcha using the refresh button next to it. But Nd is not a problem. Its atomic number is 60. You need to add up to 200. Fm: 100, Zr: 40. I knew that memorizing atomic numbers would pay back some day :P
5 points
