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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?

Introductory Chemistry For Today
Introductory Chemistry For Today
8th Edition
ISBN:9781285644561
Author:Seager
Publisher:Seager
Chapter2: Atoms And Molecules
Section: Chapter Questions
Problem 2.22E
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15:42 x 5. ☺ 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? Add a caption... T Ò > Status (Custom)
Transcribed Image Text:15:42 x 5. ☺ 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? Add a caption... T Ò > Status (Custom)
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