HÓA 8- BÍ KÍP HÓA HỌC - HÓA TRỊ 2nd Grade Quiz

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1.

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20 sec • 1 pt

Hóa trị của sắt trong hợp chất Fe₂O₃là

2.

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20 sec • 1 pt

Hóa trị của Cu trong hợp chất CuO là:

3.

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10 sec • 1 pt

Hóa trị của nguyên tố Oxi là

4.

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10 sec • 1 pt

Hóa trị của nhôm là

5.

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10 sec • 1 pt

Hóa trị của magie là:

6.

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10 sec • 1 pt

Hóa trị của kẽm là

7.

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10 sec • 1 pt

Hóa trị của natri là

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