An element has a mass number of 20, it has 9 neutrons and has lost an electron. Write the isotope in the x format. How many electrons would a neutral atom have in the nucleus if it had 4 protons and 4 neutrons? Write the electron configuration of a carbon atom that has gained 2 electrons. A strange sample has 2 isotopes with abundances 24.5% and 74.5%. The atomic masses of the isotopes are 205.974 and 207.657. Calculate the atomic mass of the material and propose what the material might be?

An element has a mass number of 20, it has 9 neutrons and has lost an electron. Write the isotope in the x format. How many electrons would a neutral atom have in the nucleus if it had 4 protons and 4 neutrons? Write the electron configuration of a carbon atom that has gained 2 electrons. A strange sample has 2 isotopes with abundances 24.5% and 74.5%. The atomic masses of the isotopes are 205.974 and 207.657. Calculate the atomic mass of the material and propose what the material might be?

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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