
(a)
Interpretation:
The equation for radioactive decay of
Concept Introduction:
Electron capture involves the absorption of electrons by the proton rich nucleus from the inner shells. During this process, the proton changes to neutron releasing an electron and
(a)

Answer to Problem 7E
The radioactive decay of
Explanation of Solution
The radioactive decay of
(As Ga has atomic number as 31)
While computing the mass numbers and
Mass Number: 68 + 0 =?
x = 68
Atomic number: 31 + (-1) =?
y= 30
Hence unknown element is
The radioactive decay of
(b)
Interpretation:
The equation for radioactive decay of
Concept Introduction:
Beta decay takes place when there is excess of protons or neutrons which gets transformed to other. In beta plus decay, proton gets converted to neutron releasing positron and neutrino. The emission of positron will decrease the atomic number by 1 with no changes in mass number.
(b)

Answer to Problem 7E
The radioactive decay of
Explanation of Solution
The radioactive decay of
While computing the mass numbers and atomic mass for unknown element, it is found that
Mass number: 62 = 0 +?
x = 62
Atomic Number: 29 =? + (1)
y= 28
Hence unknown element is
Hence, the overall equation for the radioactive decay of
(c)
Interpretation:
The equation for radioactive decay of
Concept Introduction:
Radioactive decay takes place when an atomic nucleus is unstable such that it gets converted to smaller stable nuclei emitting radiations like alpha, beta, and gamma. Release of alpha particle causes a decrease in mass number by 4 units and atomic number by 2 units.
(c)

Answer to Problem 7E
The radioactive decay of
Explanation of Solution
The radioactive decay of
While computing the mass numbers and atomic mass for unknown element, it is found that
Mass number: 212 = ?+4
x = 208
Atomic number: 87=? + 2
y= 85
Hence unknown element is
The radioactive decay of
Hence, the overall equation for the radioactive decay of
(d)
Interpretation:
The equation for radioactive decay of
Concept Introduction:
Radioactive decay releases radiations like alpha, beta and gamma, when unstable nuclei get converted to smaller stable fragments. The emission of β particle will increase the atomic number by 1 with no changes in mass number.
(d)

Answer to Problem 7E
The radioactive decay of
Explanation of Solution
The radioactive decay of
While computing the mass numbers and atomic mass for unknown element, it is found that
Mass number: 129 = x+ 0
x = 129
Atomic number: 51 = x + (- 1)
x= 52
Hence unknown element is
Hence, the overall equation for the radioactive decay of
Want to see more full solutions like this?
Chapter 20 Solutions
Chemical Principles
- Li+ is a hard acid. With this in mind, which if the following compounds should be most soluble in water? Group of answer choices LiBr LiI LiF LiClarrow_forwardQ4: Write organic product(s) of the following reactions and show the curved-arrow mechanism of the reactions. Br MeOH OSO2CH3 MeOHarrow_forwardProvide the correct IUPAC name for the compound shown here. Reset cis- 5- trans- ☑ 4-6- 2- 1- 3- di iso tert- tri cyclo sec- oct but hept prop hex pent yl yne ene anearrow_forward
- Q6: Predict the major product(s) for the following reactions. Note the mechanism (SN1, SN2, E1 or E2) the reaction proceeds through. If no reaction takes place, indicate why. Pay attention to stereochemistry. NaCN DMF Br σ Ilm... Br H Br H H NaCN CH3OH KOtBu tBuOH NaBr H₂O LDA Et2O (CH3)2CHOH KCN DMSO NaOH H₂O, A LDA LDA Systemarrow_forwardQ7: For the following reactions, indicate the reaction conditions that would provide the indicated product in a high yield. Note the major reaction pathway that would take place (SN1, SN2, E1, or E2) Note: There may be other products that are not shown. There maybe more than one plausible pathway. Br H3C OH H3C CI ... H3C SCH2CH3 CI i SCH2CH3 ཨ་ Br System Settarrow_forwardQ2: Rank the compounds in each of the following groups in order of decreasing rate of solvolysis in aqueous acetone. OSO2CF3 OSO2CH3 OH a. b. CI Brarrow_forward
- ох 4-tert-butyl oxy cyclohex-1-ene Incorrect, 1 attempt remaining The systematic name of this compound classifies the -OR group as a substituent of the hydrocarbon, which is considered the principal functional group. The ether substituent is named with the suffix 'oxy'. The general format for the systematic name of a hydrocarbon is: [prefix/substituent] + [parent] + [functional group suffix] Substituents are listed in alphabetical order. Molecules with a chiral center will indicate the absolute configuration at the beginning of its name with the R and S notation.arrow_forward5. Compressibility (6 points total). The isothermal compressibility is a measure of how hard/easy it is to compress an object (how squishy is it?) at constant temperature. It is др defined as Br=-()=-(200²)T' (a) You might wonder why there is a negative sign in this formula. What does it mean when this quantity is positive and what does it mean when this quantity is negative? (b) Derive the formula for the isothermal compressibility of an ideal gas (it is very simple!) (c) Explain under what conditions for the ideal gas the compressibility is higher or lower, and why that makes sense.arrow_forward19. (3 pts) in Chapter 7 we will see a reaction of halocyclohexanes that requires that the halogen occupy an axial position with this in mind, would you expect cis-1-bromo-3-methylcyclohexane or trans-1-bromo-3-methylcyclohexane to be more reactive in this reaction? Briefly explain your choice using structures to support your answer. Mere-eries-cecleone) The tran-i-browse-3-methylcyclohexionearrow_forward
- Please help me calculate the undiluted samples ppm concentration. My calculations were 280.11 ppm. Please see if I did my math correctly using the following standard curve. Link: https://mnscu-my.sharepoint.com/:x:/g/personal/vi2163ss_go_minnstate_edu/EVSJL_W0qrxMkUjK2J3xMUEBHDu0UM1vPKQ-bc9HTcYXDQ?e=hVuPC4arrow_forwardProvide an IUPAC name for each of the compounds shown. (Specify (E)/(Z) stereochemistry, if relevant, for straight chain alkenes only. Pay attention to commas, dashes, etc.) H₁₂C C(CH3)3 C=C H3C CH3 CH3CH2CH CI CH3 Submit Answer Retry Entire Group 2 more group attempts remaining Previous Nextarrow_forwardArrange the following compounds / ions in increasing nucleophilicity (least to most nucleophilic) CH3NH2 CH3C=C: CH3COO 1 2 3 5 Multiple Choice 1 point 1, 2, 3 2, 1, 3 3, 1, 2 2, 3, 1 The other answers are not correct 0000arrow_forward
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781285199023Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning




