Task 1: Elements and Ions
Complete the table:
Task 2: Identify the particle
Task 3: Radioactive Decay
Using the link in the PowerPoint, summarise the types of radioactive decay
Alpha (α) ________________________________________________________
Beta (β) _________________________________________________________
Beta positive (β+) __________________________________________________
Gamma (γ) ______________________________________________________
Electron Capture (νe) _______________________________________________
Task 4: Effect on mass number and atomic number
Complete the following equations:
Task 5: Half-Lives
Complete the following questions:
Determine the half-life for the following atom:
i)
__________________________________________________________
Radium-223 is a radioactive substance. Radium-223 is an alpha emitter. The half-life ofradium-223
is 11 days. A radioactive source contains 1.7 × 10 nuclei ofradium-223. Calculate the number of
radium-223 nuclei remaining in the source after a time of 33 days.
ii)
__________________________________________________________
1.2$Basic$Atomic$Structure$and$Radioactivity
09#September#2024
15:07
