Question

Each question below consists of two statements. I in the left-hand column and II in the right-hand For each question. determine whether statement I is true or false and whether statement II is true or false.

I: Potassium permanganate is a colored compound.
II: Both potassium and manganese are metals.

• A. Both statements are true
• B. Statement I is true and Statement II is false
• C. Statement II is true and Statement I is false
• D. Both Statements are false

Answer 1

The correct option is A Both statements are true

Potassium permanganate is a purple colour compound . In KMnO${}_4$ , the oxidation state of Mn is +7 , so there is no d- electrons left and the d-d electronic transitions are not possible. But, the colour of KMnO${}_4$ is due to charge transfer from $O^{2-}$ (lingand) to central metal atom.

It is called ligand to metal charge transfer. Due to charge transfer oxidation state of Mn changes from+7 to +6 momentarily.

Both K and Mn shows all required properties of metals such as malleability, good conductor of heat and electricity and they show electropositive character. So, they are metals.