3. which description most accurately describes neptium -239? a. mass number=93, atomic number=239 b. mass number =93, number of neutrons=146 c. mass number=146, atomic number=93 d. number of protons=93, number of neutrons= 146 4. How many protons, electrons and neutrons are found in a Cl' ion formed from Cl-35? 5.Which of the two ions below have the same number of electrons? 1271- , 50119Sn+2 . 82207Pb+4 53 , 56137Ba+2

3. which description most accurately describes neptium -239? a. mass number=93, atomic number=239 b. mass number =93, number of neutrons=146 c. mass number=146, atomic number=93 d. number of protons=93, number of neutrons= 146 4. How many protons, electrons and neutrons are found in a Cl' ion formed from Cl-35? 5.Which of the two ions below have the same number of electrons? 1271- , 50119Sn+2 . 82207Pb+4 53 , 56137Ba+2

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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