What percent of the element is left at the 1st half life? b) What
percent of the element is left at the 2nd half life? c) What percent of the
element is left at the 3rd half life?
a) 50-60% b) 24 - 30% c) 12-15%
( a) 12-15% b) 24 - 30% c) 50-60%
O
a) 70 - 80% b) 50-60% c) 24 - 30 1a
() a) 24-30% b) 50-60% c) 70-80%