atomic structure Flashcards
1
Q
what is the radius of an atom?
A
1x10^-10 metres
2
Q
what is the radius of a nucleus?
A
less then 1/10,000 of the atom
3
Q
what is the rule for energy and energy levels?
A
electrons which are further from nucleus are at a higher energy than those closer to nucleus
4
Q
describe the process of electron movement?
A
if atom absorbs E.M. radiation, electron can move from lower energy level to higher energy level
the atom can now emit E.M. radiation, which causes electron to move back to lower energy level
5
Q
what is an isotope?
A
atom of the same element with different number of neutrons but same number of protons
