Periodic Table Database - Build a Periodic Table Database

Tell us what’s happening:

It appears fcc has a bit change something in this where as i did this about one month and a half ago and it seems it has changed a bit… so how do i change my database so that it can be exactly to the atomic_mass.txt file

Your code so far


Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Challenge Information:

Periodic Table Database - Build a Periodic Table Database