Learning Goal: To understand isotope notation and how to use it to determine the number of protons and neutrons and the mass number for atoms. Atoms with the same number of protons but different numbers of neutrons are called isotopes. Some elements only have one naturally occurring isotope, while others such as carbon have two or more. In a naturally occurring sample, isotopes of each element are present in a certain percentage amount called the percent natural abundance. The mass number of an isotope is the sum of the number of protons and the number of neutrons for a particular isotope and is symbolized by AA. A=number of protons+number of neutronsA=number of protons+number of neutrons There are several different types of isotope notation. For example, a carbon isotope that has an atomic number of 6 and a mass number of 13 could be symbolized in any of the following ways: 13 6C 613C, carbon-13, or CC-13. Part A Enter the appropriate symbol for an isotope of potassium-39 corresponding to the isotope notation AZXZAX. Express your answer as a chemical symbol using isotope notation. View Available Hint(s)for Part A Hint 1for Part A. How to interpret isotope notation Hint 2for Part A. Determine the atomic number of potassium-39

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 29QRT: Argon has three naturally occurring isotopes: 0.3336% 36Ar, 0.063% 38Ar, and 99.60% 40Ar. Estimate...

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Learning Goal:

To understand isotope notation and how to use it to determine the number of protons and neutrons and the mass number for atoms.

Atoms with the same number of protons but different numbers of neutrons are called isotopes. Some elements only have one naturally occurring isotope, while others such as carbon have two or more. In a naturally occurring sample, isotopes of each element are present in a certain percentage amount called the percent natural abundance.

The mass number of an isotope is the sum of the number of protons and the number of neutrons for a particular isotope and is symbolized by AA.

A=number of protons+number of neutronsA=number of protons+number of neutrons

There are several different types of isotope notation. For example, a carbon isotope that has an atomic number of 6 and a mass number of 13 could be symbolized in any of the following ways: 13 6C 613C, carbon-13, or CC-13.