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1. The equilibrium internuclear distance of deuterium iodide, DI, is 160.4 pm, where 1 pm = 1x10-12m.
The relevant atomic masses are: mD = 2 amu and mI= 127 amu,
where 1 amu = 1.661 x10-27kg.
a) What is the rotational constant of deuterium iodide, in megahertz (MHz) and cm-1?
Which of the following pairs has about the same atomic radius?
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