
Concept explainers
Interpretation:
Stable
Concept introduction:
An atom or an element exists in many isotopic forms. Some isotopes are found naturally on Earth while some exist due to human activity. Isotopes differ in the number of neutrons in the nucleus of the atom. Some isotopes have stable nuclei while some have unstable nuclei.

Answer to Problem 3E
Oxygen, O has 3 stable isotopes.
Neodymium, Nd has 5 stable isotopes
Copper, Cu has 2 stable isotopes
Tin, Sn has 10 stable isotopes
Explanation of Solution
Given information:
Following elements are given:
Oxygen neodymium, copper and tin
Elements are found in one or more isotopic forms. Some isotopes have stable nuclei while some have unstable nuclei.
Stability of nucleus determines the stability of an isotope. Unstable nucleus will disintegrate. There should be a balance between the number of protons and number of neutrons to have a stable nucleus. Large atoms need more neutrons to make stable nuclei.
From the isotope graph following observations are made:
- Oxygen - It has 8 protons. There are 3 stable isotopes seen on the graph; with 8, 9 and 10 neutrons.
- Neodymium, Nd has 5 stable isotopes. It has 60 protons. The graph shows 5 stable isotopes with 82, 83, 85, 86 and 88 neutrons.
- Copper has 29 protons. The graph shows 2 stable isotopes of copper with 34 and 36 neutrons.
- Tin with 50 protons has maximum number of stable isotopes. The graph shows 10 stable isotopes.
Each element has different number of isotopes. Some isotopes are stable while some are radioactive; some isotopes are abundantly available on earth while some are rare.
Chapter U1 Solutions
Living By Chemistry: First Edition Textbook
Additional Science Textbook Solutions
Biology: Life on Earth (11th Edition)
Human Physiology: An Integrated Approach (8th Edition)
Chemistry (7th Edition)
Human Anatomy & Physiology (2nd Edition)
Organic Chemistry (8th Edition)
Campbell Biology (11th Edition)
- please help fill in the tablearrow_forwardAnswer F pleasearrow_forward4. Refer to the data below to answer the following questions: The octapeptide saralasin is a specific antagonist of angiotensin II. A derivative of saralasin is used therapeutically as an antihypertensive. Amino acid analysis of saralasin show the presence of the following amino acids: Ala, Arg, His, Pro, Sar, Tyr, Val, Val A.Sar is the abbreviation for sarcosine, N-methyl aminoethanoic acid. Draw the structure of sarcosine. B. N-Terminal analysis by the Edman method shows saralasin contains sarcosine at the N-terminus. Partial hydrolysis of saralasin with dilute hydrochloric acid yields the following fragments: Tyr-Val-His Sar-Arg-Val His-Pro-Ala Val-Tyr-Val Arg-Val-Tyr What is the structure of saralasin?arrow_forward
- What is the structure of the DNA backbone?arrow_forwardPLEASE PLEASE PLEASE use hand drawn structures when possarrow_forward. M 1- MATCH each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. Place the letter of the structure in the blank to the left of the corresponding term. A. Sanger dideoxy method C. Watson-Crick B. GAUCGUAAA D. translation E. HOH2C OH OH G. transcription I. AUGGCUGAG 0 K. OPOH2C 0- OH N- H NH2 F. -OPOH2C 0- OH OH H. Maxam-Gilbert method J. replication N L. HOH2C a. b. C. d. e. f. g. B M. AGATCGCTC a pyrimidine nucleoside RNA base sequence with guanine at the 3' end. DNA base sequence with cytosine at the 3' end. a purine nucleoside DNA sequencing method for the human genome 2'-deoxyadenosine 5'-phosphate process by which mRNA directs protein synthesis OH NH2arrow_forward
- Please use hand drawn structures when neededarrow_forwardB. Classify the following amino acid. Atoms other than carbon and hydrogen are labeled. a. acidic b. basic C. neutral C. Consider the following image. Which level of protein structure is shown here? a. primary b. secondary c. tertiary d. quaternary D. Consider the following image. H RH H HR H R HR HR RH Which level of protein structure is shown in the box? a. primary b. secondary R c. tertiary d. quaternary コー Rarrow_forwardBriefly answer three from the followings: a. What are the four structures of the protein? b. Why is the side chain (R) attached to the alpha carbon in the amino acids is important for the function? c. What are the types of amino acids? And how is it depend on the (R) structure? d. Write a reaction to prepare an amino acid. prodarrow_forward
- Answe Answer A and B pleasearrow_forward3. Refer to the data below to answer the following questions: Isoelectric point Amino Acid Arginine 10.76 Glutamic Acid 3.22 Tryptophan 5.89 A. Define isoelectric point. B. The most basic amino acid is C. The most acidic amino acid is sidizo zoarrow_forward3. A gas mixture contains 50 mol% H2 and 50 mol% He. 1.00-L samples of this gas mixture are mixed with variable volumes of O2 (at 0 °C and 1 atm). A spark is introduced to allow the mixture to undergo complete combustion. The final volume is measured at 0 °C and 1 atm. Which graph best depicts the final volume as a function of the volume of added O2? (A) 2.00 1.75 Final Volume, L 1.50 1.25 1.00 0.75 0.50 0.25 0.00 0.00 0.25 0.50 2.00 (B) 1.75 1.50 Final Volume, L 1.25 1.00 0.75 0.50- 0.25 0.00 0.75 1.00 0.00 0.25 Volume O₂ added, L 2 0.50 0.75 1.00 Volume O₂ added, L 2 2.00 2.00 (C) (D) 1.75 1.75 1.50 1.50 Final Volume, L 1.25 1.00 0.75 0.50 Final Volume, L 1.25 1.00 0.75 0.50 0.25 0.25 0.00 0.00 0.00 0.25 0.50 0.75 1.00 0.00 0.25 Volume O₂ added, L 0.50 0.75 1.00 Volume O₂ added, L 2arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





