Niobium is a compound. Niobium is an element. Niobium is a metal. Niobium is a mixture.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The chemical symbol for niobium is Nb. Based on its symbol, what can be concluded about niobium?
Possibilities:
- Niobium is a compound.
- Niobium is an element.
- Niobium is a metal.
- Niobium is a mixture.

Niobium is an element.