(a) Is the mass of a hydrogen atom in its ground state larger or smaller than the sum of the masses of a proton and an electron?
b) What is the mass difference?
c) How large is the difference as a percentage of the total mass?
d) Is it large enough to affect the value of the atomic mass listed to six decimal places?
The Attempt at a Solution
My intuitive answer to a) is that the ground state total is smaller than the sum of the masses of the proton adn electron... I believe a hydrogen atom is made up of a proton & an electron, but I make its atomic mass 1u and then compare it to the mass of a proton + an electron... however, I'm not sure if this is right, mostly because it seems too simple. Plus, when I search for the mass of a hydrogen atom online, it comes up with something about equal to 2u...