Question
Question: Complete the below reaction by providing RHS part,  binds to the more substituted carbon and the boron in the alkene double bond binds to the least substituted carbon. Also, by accepting two electrons in its empty p orbital from an electron-rich alkene, the borane acts as a Lewis Anti-Markovnikov acid. This process allows boron to have an electron octet.
A very interesting feature of this process is that no activation by a catalyst is required. The mechanism of anti-Markovnikov hydroboration has both hydrogenation and electrophilic addition elements and is stereospecific (syn addition), which means that the hydroboration takes place on the same side of the double bond, leading to cis stereochemistry.
The hydroboration reaction in propene will be as shown below
So, the hydroboration reaction of propene will produce propanol.
Note:
A little bit about the structure and properties of the borane molecule is very important to understand. Borane occurs naturally as a very toxic gas, and the general formula B2H6 (diborane) exists as a dimer. Additionally, the B2H6 dimer spontaneously ignites in the air. Borane is commercially available in ether and tetrahydrofuran ( THF). Borane can exist as a lewis acid-base complex in these solutions, allowing an electron octet to be present in boron.