9. how many half - lives occurred in a rock containing one - half parent material and one - half daughter…
9. how many half - lives occurred in a rock containing one - half parent material and one - half daughter material?\n2\n1\n4\n3
Answer
Explanation:
Step1: Define half - life concept
Half - life is the time required for half of the parent material in a radioactive substance to decay into daughter material.
Step2: Analyze given situation
If a rock has one - half parent material and one - half daughter material, it means that half of the original parent material has decayed.
Answer:
1