CBSE Class 12 Chemistry 2017 Delhi Set 1 Solved Paper

Question : 1

Total: 26

Write the formula of an oxo-anion of manganese (Mn) in which it shows the oxidation state equal to its group number.

Solution:

The formula of an oxo-anion of manganese (Mn) in which it shows the oxidation state equal to its group number (7) is MnO4−.
Mn+(−2×4)‌=−1
Mn−8‌=−1
Mn‌=7
Oxidation state of Mn in MnO4−is + 7. The group number of Mn is also 7.

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