Tutorial 3 - 1. Exposure to high doses of microwaves can...

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1. Exposure to high doses of microwaves can cause damage. Estimate how many photons, with λ = 12 cm, must be absorbed to raise the temperature of your eye by 3.0°C. Assume the mass of an eye is 11g and its specific heat capacity is 4.0J/g.K. 2. The Technetium compound NaTcO 4 is used in imaging studies of the brain, thyroid and salivary glands and in renal blood flow studies among other things a) The valance electrons of technetium are found in the 5s and 4d subshells. What is the set of quantum numbers ( n , l and m l ) for one of the electrons in the 5s subshell? b) Technetium emits γ -ray with energy of 0.141 MeV. What are the wavelength and frequency of a γ -ray photon with energy of 0.141 MeV? 3. The ionization energies for the removal of the first electron in Si, P, S and Cl are as listed below. Briefly rationalize this trend. Element First Ionization Energy (kJ/mol) Si 780 P 1060 S 1005 Cl 1255 4. Thionyl chloride, SOCl 2 is an important chlorinating and oxidizing agent in organic
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This note was uploaded on 09/25/2008 for the course - - taught by Professor - during the Spring '08 term at Nanyang Technological University.

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Tutorial 3 - 1. Exposure to high doses of microwaves can...

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