Jawaban
1. +6
2. +6
3. +3
Penjelasan
1. Cr pada Cr2O7 2-
2Cr + 7(-2) = -2
2Cr -14 =-2
2Cr = 12
Cr = +6
2. Cr pada CrO3
Cr + 3(-2) = 0
Cr -6 = 0
3. Cr pada [Cr(Cl)6] 3-
Cr + 6(-1) = -3
Cr -6 = -3
Cr = +3
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Jawaban
1. +6
2. +6
3. +3
Penjelasan
1. Cr pada Cr2O7 2-
2Cr + 7(-2) = -2
2Cr -14 =-2
2Cr = 12
Cr = +6
2. Cr pada CrO3
Cr + 3(-2) = 0
Cr -6 = 0
Cr = +6
3. Cr pada [Cr(Cl)6] 3-
Cr + 6(-1) = -3
Cr -6 = -3
Cr = +3
Semoga membantu