I am a chemical symbol for an element.
This element was discovered in 1824.
I am a Spanish word without the accent.
Reverse me so that I may become a form of a common verb.
What symbol am I?
Answer
Si. (silicon)
Silicon was discovered in 1824.
“Si” with an accent means “yes” in Spanish.
Reverse it to become “is”, which is a form of the verb “be”.