In all atoms, the number of protons and the number of electrons is always the same. The number of neutrons is very roughly the same as the number of protons, but sometimes it's rather more. The number of protons in an atom is called the atomic number and it tells you what type of atom you have.
I think it’s 7.41 because you count up all the atoms and find out how many are x (the large grey ones) and you do 2/27 x 100 which gives you 7.41 :) (sorry if i counted wrong it’s kinda hard)
The answer would be c it should be The right answer if I’m wrong I’ll fix it for you
A only gets out some of it but not all
C that isn't for alcaholl
D I don't think that even exists
B is the only correct answer