Atomic Structure

Question 1

What’s the radius of an atom

Answer 1

1x10 to the power of minus 10 m

Question 2

What’s the radius of the nucleus

Answer 2

Radius of nucleus is less than 1/10 000 of the radius of the atom.

Question 3

Key fact about energy levels

Answer 3

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

Question 4

Show one way an electron can move from a lower energy level to a higher energy level

Answer 4

If an atom absorbs electromagnetic radiation the electron can move from a lower energy level to a higher energy level.

Question 5

What happens next

Answer 5

The atom can now emit electromagnetic radiation and the electron returns back to the lower energy level.