How many different elements are in the compound C6H12O6?

The compound C₆H₁₂O₆, commonly known as glucose, contains three different elements: carbon (C), hydrogen (H), and oxygen (O).

To break it down:

• There are 6 carbon atoms.
• There are 12 hydrogen atoms.
• There are 6 oxygen atoms.

Though the total number of atoms is high, the types of elements present are only three. So, the answer is three different elements.