関連ワード:
2nd most common element in earth's crust 2nd most abundant element in earth crust second most common element in earth's crust 2nd most abundant element in earth's crust with 14 neutrons 2nd most abundant element in earth's crust and have 14 neutrons 2nd most abundant element in earth's crust and has 14 neutrons 2nd most abundant metal in earth crust second most abundant element in earth crust among first transition series the second most abundant element in earth's crust is silicon which has the atomic number second most abundant element in earth crust by weight
