Verbal Reasoning — Classification (odd-one-out): Identify the one option that does not belong to the same category as the others. Use naming pattern/chemical classification to spot the outlier. Choose the word which is different from the rest.

Given data

• Elements: Potassium, Silicon, Zirconium, Gallium, Germanium.

Concept / Approach
Check for a consistent naming pattern and broad type.

Observation
Potassium, Zirconium, Gallium, Germanium → element names ending with “-ium”.Silicon → the only one not ending with “-ium”.

Additional note
Silicon is also a metalloid, while at least two others (Potassium, Gallium, Zirconium) are metals, reinforcing its distinctness.

Final Answer
Silicon