This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The isotope 238U, which starts one of the natural radioactive series, decays first by alpha decay ... (Read 100 times)

urbanoutfitters

  • Hero Member
  • *****
  • Posts: 530
on: Jul 28, 2018
The isotope 238U, which starts one of the natural radioactive series, decays first by alpha decay followed by two negative beta decays. At this point, what is the resulting isotope?
 a. 234Th (Z = 90 for Th.)
  b. 236U
  c. 238U
  d. Some other uranium isotope not given above.

Question 2

In the four radioactive series, the nuclei decay by either emitting alpha particles or beta particles until they reach the stable end product. Each decay, therefore, results in a mass number change of either 4 (for alpha decay) or 0 (for beta decay). The radium isotope 226Ra is in one of these series. What is the starting isotope in the series containing 226Ra?
 a. 238U
  c. 232Th
  b. 235U
  d. 237Np


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aadams68

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


urbanoutfitters

  • Member
  • Posts: 530
Reply 2 on: Jul 28, 2018
Excellent

abro1885

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Dentition, as illustrated in Knight's Sketches in Natural History Dentition, as illustrated in Knight's Sketches in Natural History
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri. The two bright stars are (left) Alpha Centauri and (right) Beta Centauri.
Selected Natural Products Selected Natural Products
Natural Causes of Climate Change Natural Causes of Climate Change
Natural plant sources of pharmaceutical Natural plant sources of pharmaceutical
Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take Americium-243 has a decay constant of 9.39 × 10-5 years-1. How long will it take
Video: Physiology of Asthma

For a complete list of videos, visit our video library