Draw the structures of the missing reactants, intermediates, or products in the following mechanism. Include all lone pairs. **Organic Chemistry Reaction Mechanism Exercise****Instructions**: Draw the structures of the missing reactants, intermediates, or products in the following mechanism. Include all lone pairs. Ignore stereochemistry and inorganic byproducts.**Reaction Diagram Overview**:1. **Starting Material**: - Box labeled "Draw Starting Alkene": This is where you should draw the structure of the starting alkene.2. **First Step**: - Addition of \( \text{H}^+ \) to the starting alkene leads to the formation of a carbocation. - The carbocation is depicted as follows: - A diagram showing a carbon atom bonded to a methyl group (\( \text{CH}_3 \)) and three hydrogen atoms (\( \text{H} \)). - The carbocation is indicated by a positive charge on the central carbon atom.3. **Intermediate Step**: - Box labeled "Select to Draw": Fill in this box with the appropriate intermediate that results from the reaction of the carbocation.4. **Final Step**: - Reaction with \( \text{Br}^- \) to form the final product. - Box labeled "Draw Major Product": Draw the major product of the reaction here.This activity helps in understanding the reactivity and transformations of organic molecules in addition reactions.

When 3-Methylbut-1-ene (starting material, alkene) reacts with H^+ of HBr then an intermediate secondary carbocation is formed. Then it involves 1,2-H^- shift to give more stable tertiary carbocation. Then nucleophilic Br^- attacks to the electrophilic carbocationic carbon to give 2-Bromo-2-methyl butane as final product. Details mechanism are shown in image.