MacGuffium 239 was, as bạn know, mentioned in "It's About Time". It was a pink, glowing liquid. But, what exactly would it look like if it was real? ......................................................................................................First, let's get a lesson in the periodic table. The Periodic bàn is grouped bởi similar properties with each of its 117 elements (some of which haven't been verified, but I won't get into that since it's difficult to explain). Elements are ordered bởi their atomic number, which is the number in the hàng đầu, đầu trang left corner of the element square. Under...
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