Question : Which of the following pairs of chemical elements and their symbols is incorrect?
Option 1: Phosphorus – P
Option 2: Potassium – Po
Option 3: Iron – Fe
Option 4: Iodine – I
Correct Answer: Potassium – Po
Solution : The correct answer is Potassium – Po .
The pair with an incorrect chemical symbol is "Potassium-Po". The correct symbol for potassium is K, not Po. Phosphorus is represented by P, iron by Fe and iodine by I, and these are accurate chemical symbols for their respective elements. The symbol "Po" is associated with polonium, not potassium.
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