10. Which of the following statements regarding nuclear chemistry is correct? A.

Question

10. Which of the following statements regarding nuclear chemistry is correct? A. Radioactive decay processes result in a change in the nucleus of the isotope undergoing reaction. B. A nuclear particle (a proton or neutron) is called a nuclide. C. Radioactive decay always results in the emission of an alpha particle. D. All isotopes are radioactive. E. Atoms with the same mass number but different atomic numbers are called isotopes. 11. What type of radioactive decay would be expected for the unstable nuclide? A. neutron emission B. positron emission C. beta particle (electron) emission D. alpha particle emission E. gamma ray emission 12. Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute (cpm) per gram of carbon. If a bone is determined to have an activity of 3.80 cpm per gram of carbon, how old is the bone? A. 5730 yr B. 17,200 yr C. 22,900 yr D. 8600 yr E. 11,500 yr 13. Which of the following changes occur to the nucleus when a heavy element undergoes alpha particle emission? A. Only the number of neutrons decreases B. Only the number of protons decreases C. Only the number of neutrons increases. D. Only the number of protons increases E. Both the number of neutrons and protons decreases.

Explanation / Answer

THERE ARE 4 QUESTIONS ,......ALL OBJECTIVES PLEASE POST THEM SEPARATELY, I WOULD ANSWER SEPARATELY TO EACH QUESTION ...THANKS

10) A OPTION IS CORRECT ...

EXPLANATION : RADIOACTIVITY IS A NUCLEAR PHENOMENA WHERE THE NUCLUES DECAYS CAUSING CHANGES IN NUCLEUS , . DIFFERENT DECAYS ARE THERE NOT ONLY ALPHA PARTICLES .

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