How would you account for the increasing oxidising power in the series `VO_2^(o+)ltCr_2O_7^(2-)< MnO_4^(ɵ)`?

Explanation

To account for the increasing oxidizing power in the series \( VO_2^{+} < Cr_2O_7^{2-} < MnO_4^{-} \), we can analyze the oxidation states of the central metal ions, their electronic configurations, and the stability of their reduced forms.

### Step-by-Step Solution:

1. **Identify the Oxidation States:**
- For \( VO_2^{+} \):
- Let the oxidation state of vanadium (V) be \( x \).
- The equation is: \( x + 2(-2) = +1 \).
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