Which of the transitions in the following hydrogen atom energy-level diagram involves the shortest wavelength photon? 
Definitions:
Machine-Hours
A measurement of the amount of time a machine is operated, used in allocating costs or determining production levels.
Molding
The process of shaping a pliable raw material by using a rigid frame or model called a mold.
Assembly
The process of putting together various components or pieces to build a finished product.
Predetermined Overhead Rate
A rate calculated before the accounting period begins, used to estimate the cost of manufacturing overhead for a specific activity base.
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