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Some of the isotopes of silicon are listed in the
Chapter 6, Problem 7CI(choose chapter or problem)
Some of the isotopes of silicon are listed in the following table: (3.4, 3.5, 3.7, 4.2, 4.4, 5.8)Isotope% Natural AbundanceAtomic Mass (amu)Half-LifeRadiation Emitted 26.994.2 sPositron 92.2327.98StableNone 4.6728.98StableNone 3.1029.97StableNone 30.982.6 hBetaa. In the following table, indicate the number of protons, neutrons, and electrons for each isotope listed:IsotopeNumber of ProtonsNumber of NeutronsNumber of Electrons ________________b. What is the electron configuration of silicon?c. Calculate the atomic mass for silicon, using the isotopes that have a natural abundance.d. Write the balanced nuclear equations for the decay of and e. Draw the electron-dot formula and predict the shape of SiCl4.f. How many hours are needed for a sample of with an activity of 16 µCi to decay to 2.0 µCi?
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QUESTION:
Some of the isotopes of silicon are listed in the following table: (3.4, 3.5, 3.7, 4.2, 4.4, 5.8)Isotope% Natural AbundanceAtomic Mass (amu)Half-LifeRadiation Emitted 26.994.2 sPositron 92.2327.98StableNone 4.6728.98StableNone 3.1029.97StableNone 30.982.6 hBetaa. In the following table, indicate the number of protons, neutrons, and electrons for each isotope listed:IsotopeNumber of ProtonsNumber of NeutronsNumber of Electrons ________________b. What is the electron configuration of silicon?c. Calculate the atomic mass for silicon, using the isotopes that have a natural abundance.d. Write the balanced nuclear equations for the decay of and e. Draw the electron-dot formula and predict the shape of SiCl4.f. How many hours are needed for a sample of with an activity of 16 µCi to decay to 2.0 µCi?
ANSWER:Solution 7CI:Some of the isotopes of silicon are listed in the following table: Isotope% Natural AbundanceAtomic Mass (amu)Half-LifeRadiation Emitted 26.994.2 sPositron 92.2327.98StableNone 4.6728.98StableNone 3.1029.97StableNone 30.982.6 hBeta Step-1a. In the following table, we have to indicate the number of protons, neutrons, and electrons for each isotope listed:IsotopeNumber of ProtonsNumber of NeutronsNumber of Electrons 14 27-14 = 13 14 14 28-14 = 1414 14 29-14 = 15 14 14 30-14 = 16 14 14 31-14 = 17 14________________Step-2b. Here we have to write the electron configuration of silicon.Atomic number of Si is 14.Its electronic configuration is,28Si [Ne] 3s2 3p2.________________Step-3c. Here we have to calculate the atomic mass for silicon, using the isotopes that have a natural abundance. The calculation of atomic mass for silicon using the isotopes which have a natural