
Concept explainers
(a)
Interpretation:
The less stable isotope in the given pair has to be listed.
Concept introduction:
Neutron to proton ratio determines the stability of the nucleus. The elements which has low
- The nuclei which contain 2, 8, 20, 50, 82 or 126 protons or neutrons are more stable than nuclei that do not have these numbers of particles. This is also known as magic numbers.
- Nucleus that contains even number of protons and even number of neutrons are more stable than nucleus having odd number of protons and odd number of neutrons.
(b)
Interpretation:
The less stable isotope in the given pair has to be listed.
Concept introduction:
Neutron to proton ratio determines the stability of the nucleus. The elements which has low atomic number, neutron to proton ratio is close to 1 and this is more stable. When then atomic number increases, the neutron to proton ratio becomes greater than 1 and the nucleus becomes unstable.
- The nuclei which contain 2, 8, 20, 50, 82 or 126 protons or neutrons are more stable than nuclei that do not have these numbers of particles. This is also known as magic numbers.
- Nucleus that contains even number of protons and even number of neutrons are more stable than nucleus having odd number of protons and odd number of neutrons.
(c)
Interpretation:
The less stable isotope in the given pair has to be listed.
Concept introduction:
Neutron to proton ratio determines the stability of the nucleus. The elements which has low atomic number, neutron to proton ratio is close to 1 and this is more stable. When then atomic number increases, the neutron to proton ratio becomes greater than 1 and the nucleus becomes unstable.
- The nuclei which contain 2, 8, 20, 50, 82 or 126 protons or neutrons are more stable than nuclei that do not have these numbers of particles. This is also known as magic numbers.
- Nucleus that contains even number of protons and even number of neutrons are more stable than nucleus having odd number of protons and odd number of neutrons.

Want to see the full answer?
Check out a sample textbook solution
Chapter 2 Solutions
Chemistry: Atoms First
- Relative Abundance 20- Problems 501 (b) The infrared spectrum has a medium-intensity peak at about 1650 cm. There is also a C-H out-of-plane bending peak near 880 cm. 100- 80- 56 41 69 M(84) LL 15 20 25 30 35 55 60 65 70 75 80 85 90 m/zarrow_forwardPolyethylene furanoate is a polymer made from plant-based sources; it is used for packaging. Identify the monomer(s) used in the production of this polymer using a condensation process.arrow_forwardPhenol is the starting material for the synthesis of 2,3,4,5,6-pentachlorophenol, known al-ternatively as pentachlorophenol, or more simply as penta. At one time, penta was widely used as a wood preservative for decks, siding, and outdoor wood furniture. Draw the structural formula for pentachlorophenol and describe its synthesis from phenol.arrow_forward
- 12 Mass Spectrometry (d) This unknown contains oxygen, but it does not show any significant infrared absorption peaks above 3000 cm . 59 100- BO 40 Relative Abundance M(102) - 15 20 25 30 35 40 45 50 5 60 65 70 75 80 85 90 95 100 105 mizarrow_forwardDraw a Haworth projection of a common cyclic form of this monosaccharide: H HO H HO H HO H H -OH CH2OH Click and drag to start drawing a structure. Х : Darrow_forward: Draw the structure of valylasparagine, a dipeptide made from valine and asparagine, as it would appear at physiological pH. Click and drag to start drawing a structure. P Darrow_forward
- Draw the Haworth projection of α-L-mannose. You will find helpful information in the ALEKS Data resource. Click and drag to start drawing a structure. : ཊི Х Darrow_forwardDraw the structure of serine at pH 6.8. Click and drag to start drawing a structure. : d كarrow_forwardTake a look at this molecule, and then answer the questions in the table below it. CH2OH H H H OH OH OH CH2OH H H H H OH H H OH H OH Is this a reducing sugar? yes α β ロ→ロ no ☑ yes Does this molecule contain a glycosidic bond? If you said this molecule does contain a glycosidic bond, write the symbol describing it. O no 0+0 If you said this molecule does contain a glycosidic bond, write the common names (including anomer and enantiomer labels) of the molecules that would be released if that bond were hydrolyzed. If there's more than one molecule, separate each name with a comma. ☐arrow_forward
- Answer the questions in the table below about this molecule: H₂N-CH₂ -C—NH–CH–C—NH–CH—COO- CH3 CH CH3 What kind of molecule is this? 0= CH2 C If you said the molecule is a peptide, write a description of it using 3-letter codes separated ☐ by dashes. polysaccharide peptide amino acid phospolipid none of the above Хarrow_forwardDraw a Haworth projection of a common cyclic form of this monosaccharide: CH₂OH C=O HO H H -OH H OH CH₂OH Click and drag to start drawing a structure. : ☐ Х S '☐arrow_forwardNucleophilic Aromatic Substitution 22.30 Predict all possible products formed from the following nucleophilic substitution reactions. (a) (b) 9 1. NaOH 2. HCI, H₂O CI NH₁(!) +NaNH, -33°C 1. NaOH 2. HCl, H₂Oarrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
- Living By Chemistry: First Edition TextbookChemistryISBN:9781559539418Author:Angelica StacyPublisher:MAC HIGHERChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781285199030Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning




