Chemistry, 19.10.2021 21:50, Aerial14

nhận xét về số lớp electron của các nguyên tố trong cùng một chu kì với số thứ tự của chu kì( chu kì 1)

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nhận xét về số lớp electron của các nguyên tố trong cùng một chu kì với số thứ tự của chu kì( chu kì...