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5.2.2a Alpha, beta and gamma emission

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Question 10
a.

State which radioactive emission (alpha (α\alphaα), beta (β\betaβ), or gamma (γ\gammaγ)):

(i) is the least penetrating.

(ii) has a negative charge.

(iii) consists of high-energy electromagnetic waves.

[3]
b.

Cesium-137 is a radioactive isotope. The nuclide notation for a nucleus of cesium-137 is:

55137Cs ^{137}_{55}\text{Cs} 55137​Cs

(i) Determine the number of protons in one nucleus of cesium-137.

(ii) Determine the number of neutrons in one nucleus of cesium-137.

[3]
c.

Sodium-24 is a radioactive isotope with a half-life of 15 hours. The activity of a sample of sodium-24 is 2400 counts/s. Calculate the activity of this sample after 45 hours.

[3]
Markscheme

5.2.2a Alpha, beta and gamma emission Questions

  1. IGCSE
  2. /Physics
  3. /5.2.2a Alpha, beta and gamma emission

134 exam-style questions on CIE IGCSE Physics 5.2.2a Alpha, beta and gamma emission. Each one has a worked solution and a mark scheme showing where the marks go.

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