a. Write the atomic symbol, in the form X, for an isotope with an atomic number of 19 which has 20 neutrons. (Express your answer as an isotope.) b. Write the atomic symbol, in the form 4X, for an isotope that has 5 protons and 5 neutrons. (Express your answer as an isotope.)

a. Write the atomic symbol, in the form X, for an isotope with an atomic number of 19 which has 20 neutrons. (Express your answer as an isotope.) b. Write the atomic symbol, in the form 4X, for an isotope that has 5 protons and 5 neutrons. (Express your answer as an isotope.)

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter2: Atoms, Molecules, And Ions

Section: Chapter Questions

Problem 2.51QE

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.

Question

a. Write the atomic symbol, in the form X, for an isotope with an atomic number of 19 which has 20 neutrons.
(Express your answer as an isotope.)
b. Write the atomic symbol, in the form X, for an isotope that has 5 protons and 5 neutrons.
(Express your answer as an isotope.)

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Step 1: Determine the symbols for unknown isotopes:

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Step 2: a, calculation for symbol of an isotope:

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Step 3: b. calculation for symbol of an isotope:

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