Oxidation number of potassium in , and , respectively, is:

Question

Oxidation number of potassium in ,  and , respectively, is:

Canvas Classes · Accepted Answer

Key rule: Potassium is an alkali metal and always has oxidation state +1 in its compounds.

Step 1 —  (potassium oxide):

K = +1 ✓ (O is , normal oxide)

Step 2 —  (potassium peroxide):

K = +1 ✓ (O is , peroxide)

Step 3 —  (potassium superoxide):

K = +1 ✓ (O is , superoxide)

Note: The oxidation state of O changes (+2, -1, -½) but K remains +1 throughout.

Answer: Option (2) — +1, +1 and +1

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