Where are the most massive elements found on the periodic table ?

The periodic table of elements puts in order all of the known chemical elements in an instructive arrangement. Elements are organized from top to bottom and left to right in order of increasing atomic number. The order coexists with the increasing atomic mass in general. Moreover, the most massive elements are found at the bottom right part of the periodic table.

the answer is at the bottom right

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

what are the statements