4.)What nuclear process or processes lead to each of the results listed below? T

Question

4.)What nuclear process or processes lead to each of the results listed below? The possibilities are alpha emission, beta emission, positron emission, electron capture, and gamma emission. Multiple answers may be used.

A)Atomic number increases by 1. …………….

B)Mass number decreases by 4. ………….

C)No change in atomic number or mass number …………….

D)The number of protons decreases by 1. …………..

E)The number of neutrons decreases by 1. …………

F)The number of protons decreases by 2. ………….

5)Explain how the binding energy per nucleon can be used to compare the stability of nuclides.

6)How are scientists able to tell the age of a fossil?

Explanation / Answer

4)

A) Atomic number increases by 1 (beta emission)

in the beta emission atomic number of nuclide increases one unit

B ) Mass number decreases by 4.   (alpha emission)

in the alpha emission mass number 4 units atomic number 2 units decreases

C) No change in atomic number or mass number (gamma ray emission)

D)The number of protons decreases by 1   (electron capture, )

E)The number of neutrons decreases by 1   positron emission

F)The number of protons decreases by 2   alpha emission

(6)

scientist decide the age of fossible based on radioactive dating method.

dead sample has C-14 . it gradually converts in C-12 which is present in the sample now

the ratio between C-12 / C-14 gives age of sample. (fossible) . but it is not easy to determine like we are saying.

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