Answer:
Temperature does not affect the radioactive decay
Explanation:
because Temperature has no factor in radioactivity
Good Luck
Answer: The child isotope has an atomic mass of 206.
Explanation:
Alpha decay : When a larger nuclei decays into smaller nuclei by releasing alpha particle. In this process, the mass number and atomic number is reduced by 4 and 2 units respectively.
General representation of an element is given as: 
where,
Z represents Atomic number
A represents Mass number
X represents the symbol of an element
General representation of alpha decay :


1) using your senses!
2)infering
3)predicting
4)making models
hope this helped XD