How many pi bonds are in ritalin. I counted 4 pi bonds(double bonds), and 18 sigma bonds(single bonds> I want to make sure I didn't miss count anything.

To determine the number of pi (π) bonds in a molecule like Ritalin (methylphenidate), it's important to analyze the molecular structure. Ritalin has the chemical formula C14H19NO2.

Here's a step-by-step breakdown of how to count the pi bonds:

1. Start by drawing the Lewis structure of Ritalin. This will help identify the location of all the double bonds.

2. In Ritalin, there are no triple bonds present.

3. Examine the Lewis structure and identify all the double bonds. Count the number of double bonds, keeping in mind that each double bond contains one pi bond.

Based on the Lewis structure of Ritalin, you correctly identified 4 pi bonds (double bonds).

Additionally, you mentioned that there are 18 sigma (σ) bonds (single bonds) in Ritalin. This is the correct count as well.

Therefore, the total number of pi bonds (double bonds) in Ritalin is 4, and the total number of sigma bonds (single bonds) is 18. You counted them correctly!