Question

element 3: silicon
properties:

• has metallic luster
• brittle
• semi - conductor
• solid at room temp

category:

Explanation:

To determine the category of Silicon, we analyze its properties: metallic luster, brittleness, semi - conductor, and solid at room temp. These properties are characteristic of metalloids (elements with properties between metals and non - metals). Silicon is a well - known metalloid.

Answer:

Metalloid