Answer : Silicon is the element of Metalliod.
Explanation :
Metals : These are the elements that can easily loose electrons and forms cations.
For example : All the alkali or alkaline earth metals that is group 1 and 2 are the metals.
Non-metals : These are the elements that can easily gain electrons and form an anion.
For example : All the p-block elements that is group 13 to 18 are the non-metals.
Metalloids : These are the elements that shows both the property of metals and non-metals.
For example : Boron, silicon, germanium, arsenic, antimony, tellurium, polonium and astatine are the metalloids.
As per question, silicon is the elements of metalloids.
While, rubidium and vanadium are metals and radon is a noble gas.
Hence, the silicon is the element of Metalliod.
