Choose the BEST answer to the following. When an element ejects an alpha particle, the atomic number of the resulting element (a) reduces by 2. (b) reduces by 4. (c) increases by 2. (d) increases by 4.

Q: What is the ratio of the radius of an element with mass number 50 to that of an alpha particle

A: Answer              2.321

Q: What is alpha decay?

A:

Q: hat atomic number, mass number, and element results when a Radon-222 atom emits a gamma ray through…

A: As we know that the atomic number of Radon is 86 and mass number is 222.

Q: In which of the following is it possible for an entirely new atom to form. (Mark all that apply)…

A: Given problem is based on the Nuclear Physics concept. We have asked, in which process entirely new…

Q: When a uranium nucleus emits an alpha particle, its atomic number

A: The nuclear reaction of Uranium decay is given by: U92238→T90234h+H24e In the above nuclear…

Q: The atomic nucleus is most often made up of

A:

Q: Describe how smoke detectors use alpha particles.

A:

Q: If he sample of radioactive isotope has a half-life of one decade how much of the original sample…

A: Second decade means radioactive isotope will complete two half-life. So the amount of original…

Q: A human skeleton found at an archeological site is found to have on 1/10 the amount of Carbon-14 one…

A: Given, N= 1/10=0.1 No= 1 T= 5730years We know that, N= No(1/2)t/T

Q: How is radioactive emission different from radioactivity and radioactive decay?

A: Radiation is a broad term that encompasses all types of energy output and transmission, including…

Q: The half life iodine-131 is 10 days. What fraction will be left after 30 days if the original mass…

A: Given that, The half-life iodine-131 is 10 days, T1/2 = 10 days The formula for the half-life is…

Q: Explain the emission of high-energy beta particles

A: Beta particles have same mass and charge as electron. It only differs from electron in its origin.

Q: How much of a 1,164 gram radioactive sample remains after 4 half lives

A: Given Initial amount = 1164 grams Number of half life = 4

Q: The disintegration constant of a radioactive element is 0.0023 per day. Calculate the half-life and…

A: Given: The disintegration constant is 0.0023 per day.

Q: Thirty percent of a radioactive substance decays in two years. By what percent does the substance…

A:

Q: How is collision between two billiards balls different from a collision between an alpha-particle…

A: There are three different kinds of collisions. Elastic Inelastic Completely inelastic.

Q: Which element's isotope is often used to treat cancer patients?

A: The correct option is cobalt Cobalt therapy or cobalt -60 therapy is the medical use of gamma rays…

Q: If a pair of carbon atoms were fused, and the product were to emit a beta particle, what element…

A: Given, a pair of carbon atoms were fused and the product emits a beta. Thus there will be an…

Q: Choose the BEST answer to the following. A certain element emits 1 alpha particle, and its products…

A: An alpha decay of 2He4 changes both the atomic mass and atomic number of the resulting element…

Q: A certain radioactive substance has 122,200 atoms with a half-life of 12 minutes. NOTE: This is a…

A:

Q: How could an element emit alpha and beta particles and result in the same element?

A: Given:  emission of alpha and beta particle

Q: The half-life of carbon 14 is 5730 years [ Hint: Use the formula N(t)= N0e^k1 Answer in…

A: Given, N(t1/2)=N02 t1/2 of Carbon 14=5730 years

Q: What do you think is the reason for an increasing atomic radius within one group?

A: As we move down a group the number of energy levels increase.

Q: Q2- What happens to the atomic number and mass number of a nucleus when it a- Emits an alpha…

A:

Q: Complete the table for the radioactive isotope. Isotope 14C, Half Life (In years) 5715, Initial…

A: Half life of carbon 14 is 5715 years

Q: PLEASE HELP ME WITH THESE TWO QUESTIONS. THANK YOU IN ADVANCE. QUESTION 2 An isotope has 40…

A: Please see the answer below

Q: An ancient building was known to have been built 3000 years ago. Approximately what proportion of…

A: Given that                  The age of the ancient building is (T) =  3000year                  The…

Q: Choose the BEST answer to the following. When a nucleus of uranium-238 emits an alpha particle, left…

A: Uranium-238 follows the following decay equation,

Q: When was element Plutonium discovered? O 1935 O 1943 O 1941 O 1940

A:

Q: An element with an atomic mass of 57 has an isotope with an atomic of mass 58. The source of this…

A: Isotope is a terminology given to an element that has variation in atomic mass than the same element…

Q: The half-life of Carbon-14 is 11 years. How much of an initial 102 g sample will remain after 49…

A:

Q: The original number of atoms in a sample of a radioactive element is 4.00x10-0 . Find the time it…

A:

Q: How do the paths of alpha, beta, and gamma rays compare in an electric field?

A: Alpha is positively charged. Beta is negatively charged. Gamma not charged

Q: What happens to the atomic number and mass number of a nucleus when it a- Emits an alpha particle,…

A:

Q: What does the atomic number of an element tell us about it

A: Explanation: Atomic number of an element tells that the number of protons in the nucleus of the…

Q: If a sample contains 20g of an isotope that has a half life of 1000 years. How much will be left…

A: Given data:  Initial amount of sample (N0) = 20 g Half life (T1/2) = 1000 years Required: Remaining…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: