Answer :
The half-life of an isotope is the time taken for 50% of the isotope to decay, so after one half-life, half the original isotope is left.
Answer:
50 grams of the parent isotope will remain after one half-life.
Explanation:
Formula used to calculate remaining amount of an isotope after n half lives:
[tex]A=\frac{A_o}{2^n}[/tex]
where,
A = Amount of isotope left after n-half lives
[tex]A_o[/tex] = Initial amount of an isotope
n = number of half lives
Initial amount of an isotope =[tex]A_o[/tex]= 100 g
Number of half lives = 1
[tex]A=\frac{100 g}{2^1}=50 g[/tex]
50 grams of the parent isotope will remain after one half-life.
