Recently in my chemistry class my teacher told us that, the greater the atomic number the smaller the radius of the electron. Because there is more protons pulling on electrons. which would mean the elctrons move inwards.
This doesn't seem quite right to me as i thought that the distance of electron shells are constant for all atoms, but i can't find any disproofs or paradoxis with this statement so, am I wrong?
none, however an electron shell diagram could be usefull
The Attempt at a Solution
i was thinking that if electron shells could move then, theoreticly the atom could collapse by the electrons flying into the nucleus. However this doesn't seem to help me or make sense.