Ubuntu not showing exfat option

 So exfat is a format which is supported both on mac, windows and linux. It also allows to have files more than 4 gb size.

The problem I was facing is Ubuntu was showing exfat option as greyed out. The below command helped to install required libray and Viola I could format my pendrive into exfat format.

sudo apt install exfat-utils exfat-fuse

How to use inbuilt disks functionality to format pendrive

Launch "disks" app in ubuntu

Carefully select the pendrive you want to format

Click the gear icon

Select Format the partition

Give a volume name  and select other option

Now select exfat format as option 

Select format
It will inform this will delete all content on your pendrive yada.. Click Ok.
Done!