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Bảng hóa trị và công thức hóa 8

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Bảng một số
nguyên tố hóa học
Hóa trị một số
nhóm nguyên tử
Tên Ntố KHHH
NT
khối Hóa trị
Nhóm ( gốc
axit)
Kí hiệu và
Hóa trị PTK
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