239 1. Answer parts a, b, and c for the following nuclear symbol 34 Pu a. b. C. Fill in the missing values The atomic number is The mass number is The number of protons in the nucleus is The number of neutrons in the nucleus is This isotope could also be signified as: O Pu-239 O Pu-145 O Pu-94 Fill in the missing numbers A germanium-74 nucleus contains A Pu nucleus with 146 neutrons has a mass number of A Tc-99 nucleus has a mass number of protons and neutrons. and an atomic number of and an atomic number of

239 1. Answer parts a, b, and c for the following nuclear symbol 34 Pu a. b. C. Fill in the missing values The atomic number is The mass number is The number of protons in the nucleus is The number of neutrons in the nucleus is This isotope could also be signified as: O Pu-239 O Pu-145 O Pu-94 Fill in the missing numbers A germanium-74 nucleus contains A Pu nucleus with 146 neutrons has a mass number of A Tc-99 nucleus has a mass number of protons and neutrons. and an atomic number of and an atomic number of

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter10: Radioactivity And Nuclear Processes

Section: Chapter Questions

Problem 10.8E

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An element consists of 1.40% of an isotope with mass 203.973 u, 24.10% of an isotope with mass 205.9745 u, 22.10% of an isotope with mass 206.9759 u, and 52.40% of an isotope with mass 207.Y766 u. Calculate the average atomic mass, and identify the element.
Who discovered the nucleus? Describe the experiment that led to this discovery.
See the definition for isobars in Question 15. Consider Cr-54, Fe-54, Fess, and Ni-S8. (a) Which of these are isobars? Which are isotopes? (b) What do Fe-S4 and Fe-58 have in common? (c) Which atoms have the same number of neutrons?
Neon is an inert gas with three stable isotopes. It is used in gas lasers and in advertising signs. Its isotopes and their abundances are: Ne-20 19.9924 amu 90.51% Ne-21 20.9938 amu 0.27% Ne-22 21.9914 amu 9.22% What is the average atomic mass of neon?
Write the following isotopes in hyphenated form (e.g., carbon-14). (a) N1124a (b) A1329l (c) K3673r (d) I77194r
For each of the isotopes in Exercise 21.1, determine the numbers of protons, neutrons, and electrons in a neutral atom of the isotope.
Average atomic masses listed by JUPAC are based on a study of experimental results. Bromine has two isotopes 79Br and 81Br, whose masses (78.9 183 and 80.9 163 amu) and abundances (50.69% and 49.3 1%) were determined in earlier experiments. Calculate the average atomic mass of bromine based on these experiments.
In what way are isotopes of a given element always different? In what way(s) are they always the same?
What is the nuclide symbol for the nucleus that contains 11 protons and 12 neutrons?
Though the common isotope of aluminum has a mass number of 27, isotopes of aluminum have been isolated (or prepared in nuclear reactors) with mass numbers of 24, 25, 26, 28, 29, and 30. How many neutrons are present in each of these isotopes? Why are they all considered aluminum atoms, even though they differ greatly in mass? Write the atomic symbol for each isotope.
Radon is a radioactive gas that can cause lung cancer. It has been detected in the basement of some homes. In an atom of Rn-220, (a) how many protons are there? (b) how many neutrons are there?