The radioactive decay of iodine is shown in the graph.

Graph - http://tinypic.com/r/j7qlnl/6

What is the half life of radioactive iodine?
A)8
B)16
C)24
D)48

I believe it's 8 by looking at the graph, but I'm not entirely sure.

Question

The radioactive decay of iodine is shown in the graph.

Graph - http://tinypic.com/r/j7qlnl/6

What is the half life of radioactive iodine?
A)8
B)16
C)24
D)48

I believe it's 8 by looking at the graph, but I'm not entirely sure.

anonymous · Answer

ok so for you to find the answer you need to know that half life is amount of time in which starting amount of substance is halved so if you have 32 g of iodine at the begining you take half of that which is 16 and find it on y axis and then you see to which point it corresponds and that point is 8 so half life of iodine is 8 days