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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Potassium has three naturally occurring isotopes (39K, 40K, and 41K), but 40K has a very low natural abundance. Which of the other two isotopes is more abundant? Briefly explain your answer.

Interpretation Introduction

Interpretation:

The most abundant isotope of potassium is to be determined if the isotopes potassium are 39K, 40K and 41K.

Concept introduction:

  • The average atomic mass of potassium is 39.0983
  • The value of average atomic mass of an element is close to its mass number of most abundant isotope.
Explanation

The three isotopes for potassium atom are 39K, 40K and 41K, and the mass number of these isotopes are 39, 40 and 41 respectively.

The average atomic mass number of potassium is 39

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