The half-life of radiogenic ¹⁴C is 5730 years. How long must you wait until 90% of the original sample remains? A)less than 5730 years B)5730 years C)9 × 5730 = 51,570 years D)more than 51,570 years

Question

Quizplus · Accepted Answer

The half-life is the time it takes for half of a radioactive substance to decay. If 90% of the original sample remains, this means only 10% has decayed, which is less than one half-life. Therefore, the time required is less than 5730 years.

The Half-Life of Radiogenic 14C Is 5730 Years

The Half-Life of Radiogenic ¹⁴C Is 5730 Years