Skip to content

Course home

Sign up

5.1 The nuclear model of the atom

EasyMedium
12345678910111213141516171819202122232425262728
Question 19
a.

In the Geiger-Marsden (α\alphaα-particle scattering) experiment, a beam of α\alphaα-particles is directed at a thin metal foil.

(i) Describe the expected deflection path for each of the following three α\alphaα-particles:

  1. Particle A: heads directly towards a nucleus of the metal foil.
  2. Particle B: passes close to a nucleus of the metal foil.
  3. Particle C: passes far from any nucleus of the foil.

(ii) State the sign of the charge on an α\alphaα-particle.

[4]
b.

The nuclide notation for a nucleus of lead-208 is 82208Pb^{208}_{82}\text{Pb}82208​Pb.

State the numbers of electrons, neutrons, and protons in a neutral atom of lead-208.

number of electrons =

number of neutrons =

number of protons =

[3]
Markscheme

5.1 The nuclear model of the atom Questions

  1. IGCSE
  2. /Physics
  3. /5.1 The nuclear model of the atom

284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank