P4 : Atomic Structure

Question 1

What is the radius of an atom

Answer 1

1 x 10^-10m

Question 2

Energy levels

Answer 2

Energy levels which are further from the nucleus are at a higher energy level than those which are closer to the nucleus

Question 3

How can electrons move from lower to higher energy levels

Answer 3

If the atom absorbs electromagnetic radiation an electron can move from a lower energy level to a higher energy level
The atom can now emit electromagnetic radiation and the electron returns to the lower energy level