Why is there no correlation
between the size of an atom and its mass?
please help~~!!
Erm i have that, but i see no link, is there a simple way of explaining?
Simply because the size of an atom is determined primarily by the number of electron shells, and electrons (which make up electron shells) are so lightweight that they have negligible mass (ie. approximately 1/1840 the mass of a proton/neutron).
Note :
Of course, 1 can argue that the heavier the atom, the greater the no. of protons, hence the greater the no. of electrons and electron shells, hence the greater size of the atom. But since the OP/TS's teacher is obviously trying to teach his/her class a simple point, so let's not split hairs here...
Ok thanks!