1. The diameter of a neutral Helium atom is about 1 x 102 pm. Suppose we could line up Helium atoms side by side in contact with one another. Approximately, how many atoms would it take to make the distance from end to end 1 cm? 2. What is the mass number of an iron atom that has 28 neutrons? 3. Determine the number of protons and neutrons in the nucleus of: a) He z=2 A=3 b) He z=2 A=4 c) Mg z= 12 A=24 d) Mg z= 12 A= 25 e) Ti z= 22 A=48 f) Br Z=35 A = 79

1. The diameter of a neutral Helium atom is about 1 x 102 pm. Suppose we could line up Helium atoms side by side in contact with one another. Approximately, how many atoms would it take to make the distance from end to end 1 cm? 2. What is the mass number of an iron atom that has 28 neutrons? 3. Determine the number of protons and neutrons in the nucleus of: a) He z=2 A=3 b) He z=2 A=4 c) Mg z= 12 A=24 d) Mg z= 12 A= 25 e) Ti z= 22 A=48 f) Br Z=35 A = 79

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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