. Technetium is not found naturally on Earth; it must be synthesised in the laboratory. Nonetheless, because it is radioactive, it has valuable medical uses. a) In what group and period of the periodic table is technetium found? b) The valence electrons of technetium are found in 5s and 4d subshells. What is a set of quantum numbers (n, and m) for one of the electrons in the 5s subshell? c) Technetium emits a γ-ray (gamma-ray) with energy of 0,141 MeV. (1 MeV = 1 million electron volts, where 1 eV = 9,6485 x 104 J/mol.) What are the wavelength and frequency of a γ-ray photon with energy of 0,141 MeV
. Technetium is not found naturally on Earth; it must be synthesised in the laboratory. Nonetheless, because it is radioactive, it has valuable medical uses. a) In what group and period of the periodic table is technetium found? b) The valence electrons of technetium are found in 5s and 4d subshells. What is a set of quantum numbers (n, and m) for one of the electrons in the 5s subshell? c) Technetium emits a γ-ray (gamma-ray) with energy of 0,141 MeV. (1 MeV = 1 million electron volts, where 1 eV = 9,6485 x 104 J/mol.) What are the wavelength and frequency of a γ-ray photon with energy of 0,141 MeV
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter2: Atomic Structure And Periodicity
Section: Chapter Questions
Problem 96E: In the ground state of element 115, Uup, a. how many electrons have n = 5 as one of their quantum...
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5. Technetium is not found naturally on Earth; it must be synthesised in the laboratory. Nonetheless, because it is radioactive, it has valuable medical uses.
a) In what group and period of the periodic table is technetium found?
b) The valence electrons of technetium are found in 5s and 4d subshells. What is a set of quantum numbers (n, and m) for one of the electrons in the 5s subshell?
c) Technetium emits a γ-ray (gamma-ray) with energy of 0,141 MeV. (1 MeV = 1 million electron volts, where 1 eV = 9,6485 x 104 J/mol.) What are the wavelength and frequency of a γ-ray photon with energy of 0,141 MeV?
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