how many electrons can fit in a shell thingy on the out side of an atom???

Answer 1

Each Atom has several shells. For each element it is different. Each shell of the atom is called a letter starting with shell 1 the inside one is called K, shell 2 L, shell 3 M

K can hold 2 electrons, L 8 and M 8. Magnesium (Mg) which has 11 electrons has 2 on K, 8 on L and 1 on L.

Sometimes you will find a Mg Atom which has dropped the last electron so it has a perfect shell structure making it stronger. This is called an Ion of Mg. We call it Mg +1 because when the atom dropps 1 electron it unbalances the amount of electrons and protons which is usually equal. There is now 1 more proton than electron. Protons have a positive charge, electrons a negative charge (neutrons a neutral charge) there for it now becomes Mg+1

Hope this helped!

Answer 2

The shells are filled with electrons as follows.
Shell number: 1 2 3 4 5
Electrons: 2 8 18 32 50

Notice the pattern: (shell number)squared * 2

But if you are just learning about the atoms, as I'd assume you are, the basis is:
2, 8, 8, 8, 8, 8, 8, etc.

Answer 3

it depends on what type of atom you are talking about. Hydrogen only has one electron, whereas Uranium has several. This article has more details. It's been about 20 years since I was in chemistry class.

Answer 4

118

Answer 5

for helium and hydrogen - 2
all else - 8

Answer 6

if you are talking about valance electrons, eight