What physical property is responsible for Earth's layers forming in the order in
which they did?

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

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it is stable as it is in group 0 which have full outer shells of electrons

the answer is 0.42 is that is an option. this question provides no info