select all the correct answers. the isotope silicon - 32 decays into phosphorus - 32. silicon - 32 has a…

select all the correct answers. the isotope silicon - 32 decays into phosphorus - 32. silicon - 32 has a half - life of 170 years and can be used to find the age of rocks it is contained in. which two statements are true regarding this scenario? silicon - 32 is the stable daughter isotope and phosphorous - 32 is the unstable parent isotope. in a given rock sample, the amount of silicon - 32 isotope gets divided in half about every 170 years. the half - life can be used to determine the amount of silicon - 32 that has decayed from the time the closure temperature was reached. in a given rock sample, as the amount of silicon - 32 lessens, so does the amount of phosphorous - 32. in a given rock sample, the amount of silicon - 32 is always equal to the amount of phosphorous - 32.

select all the correct answers. the isotope silicon - 32 decays into phosphorus - 32. silicon - 32 has a half - life of 170 years and can be used to find the age of rocks it is contained in. which two statements are true regarding this scenario? silicon - 32 is the stable daughter isotope and phosphorous - 32 is the unstable parent isotope. in a given rock sample, the amount of silicon - 32 isotope gets divided in half about every 170 years. the half - life can be used to determine the amount of silicon - 32 that has decayed from the time the closure temperature was reached. in a given rock sample, as the amount of silicon - 32 lessens, so does the amount of phosphorous - 32. in a given rock sample, the amount of silicon - 32 is always equal to the amount of phosphorous - 32.

Answer

Answer:

  • B. In a given rock sample, the amount of silicon - 32 isotope gets divided in half about every 170 years.
  • C. The half - life can be used to determine the amount of silicon - 32 that has decayed from the time the closure temperature was reached.

Brief Explanations:

The half - life of an isotope is the time it takes for half of the amount of that isotope to decay. Silicon - 32 has a half - life of 170 years, so its amount halves every 170 years. Also, half - life is used in radiometric dating to find the amount of decayed isotope since the closure temperature (when the system became closed to isotopic exchange) was reached. The parent isotope is the one that decays (silicon - 32 here), and the daughter is the product (phosphorus - 32 here). As silicon - 32 decays, phosphorus - 32 is formed, so their amounts are not equal and as silicon - 32 lessens, phosphorus - 32 increases.