MacGuffium 239 was, as tu 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 mesa, tabla is grouped por 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 por their atomic number, which is the number in the parte superior, arriba left corner of the element square. Under...
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