Final answer:
The question about AMNO and the value of m20 lacks context and clarity, making it impossible to provide a correct answer without further information.
Step-by-step explanation:
The information provided does not contain a clear question regarding AMNO. The data points listed, such as angles and measurements in nanometers (nm), appear to be associated with various physics and chemistry problems related to wavelength, angles of diffraction, and perhaps concentration ratios in reactions.
However, since the details of the question about AMNO, finding the measure of m20, and the relationship of NO to MN are insufficiently clear, it's not possible to provide a correct answer or determine the meaningful context of this question.