1. Nitrogen a). Start building a nitrogen atom-how many protons do you need? Add that many to the nucleus. b). Štart adding neutrons, which isotopes of nitrogen are stable? c). List two isotopes of nitrogen that you made that were unstable. d). Pick two unstable isotopes of nitrogen and see how they decay. Explain why you think that isotope would decay that way...what is it trying to do, or what will happen when it does that?

1. Nitrogen a). Start building a nitrogen atom-how many protons do you need? Add that many to the nucleus. b). Štart adding neutrons, which isotopes of nitrogen are stable? c). List two isotopes of nitrogen that you made that were unstable. d). Pick two unstable isotopes of nitrogen and see how they decay. Explain why you think that isotope would decay that way...what is it trying to do, or what will happen when it does that?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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To become a cation, an atom: A. loses one or more electrons. B. Gains one or more protons. C. Gains one or more protons. D. None of the other choices. E. Gains one or more electrons.
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Caused large deflections of alpha particles in Rutherford's experiment a. proton b. neutron c. electron d. nucleus
If you wanted to change the mass number in the simulation, changing the number of which particle or particles would do that?
De All chan 1. Why is the neutron to proton ratio so important? It determines the stability of the nucleus based on the shielding effect of the neutrons. The neutron to proton ratio describes a radioactive element's half-life. Scientists made up this concept because they wanted to create radiation. An atom's nucleus likes to have the same number of neutrons and protons, so knowing that ratio is important. 00:53:35 PREVIOUS 1 of 20 NEXT SAVE
1. explain the hazards and uses of Carbon-14 (radioactively isotope). 2. Calculate each of the three subatomic particles and give specific group or period names for each atom. a. mercury b. platinum c. bromine d. aluminum e. magnesium
SOME ISOTOPES USED FOR RADIOMETRIC DATING Daughter Isotope (D) Half-Lives (T½) Useful Dating Range Parent Isotope (P) Materials Dated Newly formed crystal Uranium-238 4.5 billion years Zircon 713 million years Zircon Lead-206 ages > 10 m.y. 100 Uranium-235 Lead-207 ages > 10 m.y. 0000000o o00000 15.9% decayed to daughter Potassium-40 Argon-40 Biotite, muscovite, whole volcanic rock 1.3 billion years ages > 50,000 yr Shells, limestone, organic materials ages 100-60,000 yr Carbon-14 Nitrogen-14 5730 years 84.1 29.3% decayed 70.7 Parent Atoms (P) 000000000e 50% decayed RADIOACTIVE DECAY 50.0 Daughter Atoms (D) 25.0 75% decayed 87.5% decayed 12.5 93.8% decayed 96.9% decayed 6.2 3.1 14 2 3 4 5 6 Half-Lives (T1) Elapsed DECAY PARAMETERS FOR ALL RADIOACTIVE DECAY PAIRS Percent of Parent Atoms (P) Percent of Daughter Atoms (D) Half-Lives Elapsed Age 0.000 x T 0.015 x T 0.031 x Ty 0.062 x Ty 0.125 x T 0.250 x T 0.500 x T2 1.000 x Ty2 100.0 0.0 98.9 1.1 1/64 97.9 2.1 1/32 95.8 4.2 1/16 91.7 8.3…
4. Identify the missing product X in the equation below. 14 C What will the new isotope be? 14 C N 5 14 B A. 13 6 B. C. X 15 N N D.
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A. A solidified lava flow containing zircon mineral crystals is present in a sequence of rock layers that are exposed in a hillside. A mass spectrometer analysis was used to count the atoms of uranium-235 and lead-207 isotopes in zircon samples from the lava flow. The analysis revealed that 71% of the atoms were uranium-235, and 29% of the atoms were lead-207. Refer to Figure 8.10 to help you answer the following questions. 1. About how many half-lives of the uranium-235 to lead-207 decay pair have elapsed in the zircon crystals?