Which one of the following is not a metal?You have been provided a periodic table on the final slide.IronSilverSiliconBarium

Identifying Non-Metal

1. Metals Definition: Metals are typically shiny, good conductors of heat and electricity, and are malleable and ductile. In contrast, non-metals exhibit different properties, such as being poor conductors, brittle in solid form, and can be gases or liquids at room temperature.

2. Element Analysis:

   • Iron (Fe): A metal used widely in construction and manufacturing.
   • Silver (Ag): A precious metal known for its conductivity and luster.
   • Silicon (Si): A metalloid, which means it has properties of both metals and non-metals, but is primarily classified as a non-metal due to its lack of metallic characteristics in certain forms.
   • Barium (Ba): An alkaline earth metal known for its reactivity and heavy density.

3. Conclusion: Among the options provided, Silicon is not classified as a metal, making it the correct answer.

Final Answer

Silicon is the element that is not a metal.