Periodic tableThe periodic table lists two main numbers for eachelement. The atomic number is an integer thatequals the number of protons. The number ofneutrons is not given in the periodic table becauseit will vary with different isotopes. The mass numberof an element is the sum of the protons andneutrons. To find the number of neutrons, theatomic number must be subtracted from the massnumber.Elemental symbolWhen writing the symbol for an element, asuperscript indicates the mass number and asubscript indicates the atomic number. Forexample, 14C has a mass number of 14 and anatomic number of 6. This isotope can also bewritten as just ¹4C. You do not need to put in the 6because the atomic number of carbon is always 6regardless of which isotope you are dealing with.Part AHow many neutrons are found in one atom of 59 Co?Express your answer numerically.►View Available Hint(s)ΨΠ ΑΣΦSubmit?Atomic massSince the number of neutrons varies in the periodic table, neither the number of neutronsnor the mass number (number of neutrons plus protons) is shown. What we do see is theatomic mass, or a weighted average of all the isotope masses. This is the nonintegerlisted with an element; it is the number with several decimal places. An element's atomicmass is the weighted average of the isotope masses. In other words, it is an average thattakes into account the percentage of each isotope. To find the weighted average, multiplyeach isotopic mass by its relative abundance and find the sum for each isotope of anelement. Part BA certain element X has four isotopes.4.350% of X has a mass of 49.94605 amu.83.79% of X has a mass of 51.94051 amu.9.500% of X has a mass of 52.94065 amu.2.360% of X has a mass of 53.93888 amu.What is the average atomic mass of element X?Express your answer numerically to four significant figures.▶ View Available Hint(s)VOVGI ΑΣΦamu

We have to calculate no. of neutrons in part A and average atomic mass in part B

Part B A certain element X has four isotopes. 4.350% of X has a mass of 49.94605 amu. 83.79% of X has a mass of 51.94051 amu. . 9.500% of X has a mass of 52.94065 amu. 2.360% of X has a mass of 53.93888 amu. What is the average atomic mass of element X? Express your answer numerically to four significant figures. ► View Available Hint(s) . . . ΤΜΠΙ ΑΣΦ www amu

Part B A certain element X has four isotopes. 4.350% of X has a mass of 49.94605 amu. 83.79% of X has a mass of 51.94051 amu. . 9.500% of X has a mass of 52.94065 amu. 2.360% of X has a mass of 53.93888 amu. What is the average atomic mass of element X? Express your answer numerically to four significant figures. ► View Available Hint(s) . . . ΤΜΠΙ ΑΣΦ www amu

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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