MCQ
The ionic charges on chromate ion and dichromate ion respectively is:
- ✓$-2, -2$
- B$-3, -2$
- C$-2, -4$
- D$-4, -2$
✓
Answer
Correct option: A.
$-2, -2$
Chromate salts contain the chromate anion$, \text{CrO}^{2-}_4$ with $-2$ ionic charge.
Dichromate salts contain the dichromate anion$, \text{CrO}^{2-}_7$ with $-2$ ionic charge.
They are oxoanions of chromium in the $+6$ oxidation state.
Dichromate salts contain the dichromate anion$, \text{CrO}^{2-}_7$ with $-2$ ionic charge.
They are oxoanions of chromium in the $+6$ oxidation state.
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