Question

Which of the following is the heaviest? Electron,proton, neutron,or nucleus.

Neutral lithium has 3 protons. During a chemical reaction, 1 electron is removed. How many protons does lithium have now? 3,2,1, or you must know what element lithium reacted with to determine this

Answer 1

The heaviest is the nucleus
In chemical reactions nuclei aren't affected and since the protons are located inside the nucleus then they won't be affected. So the no of protons lithium has after the reaction will remain 3