To determine the chemical formula for glucose, let's review the chemical composition of glucose. Glucose is a simple sugar with the molecular formula containing carbon (C), hydrogen (H), and oxygen (O).
Now, let's examine each of the given options:
1. [tex]\( C_{12}H_6O_2 \)[/tex]:
- This formula indicates 12 carbon atoms, 6 hydrogen atoms, and 2 oxygen atoms. This is not the formula for glucose.
2. [tex]\( C_6H_{12}O_6 \)[/tex]:
- This formula shows 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. This matches the known formula for glucose.
3. [tex]\( CH_{12}O_6 \)[/tex]:
- This formula has 1 carbon atom, 12 hydrogen atoms, and 6 oxygen atoms, which does not match the glucose formula.
4. [tex]\( C_6H_{10}O_5 \)[/tex]:
- This formula indicates 6 carbon atoms, 10 hydrogen atoms, and 5 oxygen atoms. This is not the formula for glucose; it is actually the formula for another carbohydrate called cellulose.
Therefore, the correct answer is [tex]\(C_6H_{12}O_6\)[/tex].
Thus, the chemical formula for glucose is [tex]\( \boxed{2} \)[/tex].
