atomic structure Flashcards
1
Q
what is the radius of an atom?
A
1x10 to the power of (-10) meters
2
Q
what’s in an atoms nucleus?
A
protons (+) and neutrons (neutral)
3
Q
what is the nucleus surrounded by?
A
electrons (-) in shells/ energy levels
4
Q
what are energy levels that are further from the nucleus?
A
they’re at a higher energy than those closer to the nucleus
5
Q
what happens when an atom absorbs electromagnetic radiation?
A
an electron can move from a lower energy level to a higher energy level
6
Q
what happens to the atom?
A
it can emit electromagnetic radiation and the electron returns back to the lower energy level
