None of the above is the correct choice
Answer:33mins
Step-by-step explanation:
Answer:
(i) Approximately 3 half lifes
(ii) 
Step-by-step explanation:
(i) ∵ The half life of Radon-222 is approximately 3.8 days,
So, the number of half life in 11.46 days =
≈ 3
(ii) Since, the half life formula is,

Where,
= initial quantity,
t = number of periods
= half life of the quantity,
Given,
N = 
t = 11.46 days,



Answer:
see from my point of view I can see the ans of 1no 0,4
B is the answer there is a common denominator y’a welcome