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5.1.2a Composition of the nucleus and isotopes

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Question 20
a.

The table below describes four nuclides:

name of nuclidebismuth-210bismuth-212polonium-212lead-208
nuclide notation 83210Bi^{210}_{\ 83}\text{Bi} 83210​Bi 83212Bi^{212}_{\ 83}\text{Bi} 83212​Bi 84212Po^{212}_{\ 84}\text{Po} 84212​Po 82208Pb^{208}_{\ 82}\text{Pb} 82208​Pb

State which two nuclides have the same number of protons.

[1]
b.

State which two nuclides have the same number of nucleons.

[1]
c.

State which one of the four nuclides has the most electrons orbiting when it is in a neutral atom.

[1]
d.

Bismuth-210 has a half-life of 5.0 days. A sample of radioactive material contains 80 mg of bismuth-210.

Calculate the mass of bismuth-210 remaining after 20 days.

[2]
Markscheme

5.1.2a Composition of the nucleus and isotopes Questions

  1. IGCSE
  2. /Physics
  3. /5.1.2a Composition of the nucleus and isotopes

170 exam-style questions on CIE IGCSE Physics 5.1.2a Composition of the nucleus and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.

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