Biology
10th Edition
ISBN: 9780073383071
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 2, Problem 6A
The decay of radioactive isotopes involves changes to the nucleus of atoms. Explain how this differs from the changes in atoms that occur during
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Carbon-14 is a radioactive material. It contains 6 protons and 8 neutrons.
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The mass number is unchanged by the decay of Carbon-14.
The mass number is changed by the decay of Carbon-14.
After decay the atom is still Carbon.
After decay the atom is not Carbon.
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Chapter 2 Solutions
Biology
Ch. 2 - The property that distinguishes an atom of one...Ch. 2 - If an atom has one valence electronthat is. a...Ch. 2 - An atom with a net positive charge must have more...Ch. 2 - The isotopes carbon-12 and carbon-14 differ in a....Ch. 2 - Which of the following is NOT a property of the...Ch. 2 - Ionic bonds arise from a. shared valence...Ch. 2 - A solution with a high concentration of hydrogen...Ch. 2 - Using the periodic table on page 22, which of the...Ch. 2 - Refer to the element pictured. How many covalent...Ch. 2 - Prob. 3A
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- Many radioactive isotopes are used in medicine for imaging and treatment purposes. The specific isotopes used depends on the particular organ or body system being studied (for example, Xe-133 is used to image lung function and blood flow.) Technetium-99m is a common radioactive isotope using for a variety of medical applications. It is produced from the decay of Molybdenum-99 and has a half-life of 6.01 hours. What are some of the applications of Tc-99m? While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73 hours. If it were easier to harvest, would this be a good substitute for Tc-99m? (remember to explain why for full credit) While Tc-99m has a half-life of 6.01 hours, its decay product has a half-life of 213,000 years. While the medical community considers it to be reasonably safe, within the limits of testing, does this make sense considering both chemical and biological principles? What are possible ways that you might deal with or…arrow_forwardIsotopes differ from each other only in the number of electrons they contain. Select one: a. True b. Falsearrow_forwardDefine the term "spontaneous" with respect to chemical reactions.arrow_forward
- Knowing the atomic mass of an element allows inferences about which of the following? the number of protons plus neutrons in the element the number of protons plus electrons in the element the number of electrons in the element the number of protons in the elementarrow_forwardAtomic absorption spectroscopy is usually more sensitive than atomic emission spectroscopy because the population of the low-energy states isA) highB) lowC) zeroD) same as for high-energy statesarrow_forwardChlorine is an element with the symbol Cl. Draw and label atomic structure of chlorine indicating the number and locations of protons, neutrons and electrons in one atom of chlorine.arrow_forward
- a certain element consists of two stable isotopes. the first has a mass of 138 amuarrow_forwardDistinguish between each of the following pairs of terms: Neutron and proton Atomic number and mass number Atomic weight and mass numberarrow_forwardIf we removed a neutron from an atom, what would happen to the atom? Group of answer choices: a) its mass would change b) it would have a positive charge c) it would become a different element d) it would become polar e )it would have a negative chargearrow_forward
- Refer to the following figure (first three rows of the periodic table) to answer the questions below. What element does not react with other elements? Group of answer choices A. hydrogen B. helium C. oxygen D. siliconarrow_forwardfor the first 10 atoms from the periodic table determine: the atom full name and chemical symbol atomic number atomic mass how many protons, Neutrons and electrons? Abundance in naturearrow_forwardhow many hydrogen can be formed from the question abovearrow_forward
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