Examlex
When a hydrogen atom makes the transition from the second excited state to the ground state (at -13.6 eV) the energy of the photon emitted is:
Free Trade
International trading practices characterized by minimal governmental intervention regarding tariffs, allowing for the unobstructed exchange of goods and services.
General Agreement on Trade and Tariffs
An international trade agreement signed in 1947, aimed at reducing tariffs and other trade barriers to promote global economic exchange.
Opportunity Cost
The highest-valued alternative forgone as a result of making a decision to pursue a certain course of action.
Automobiles
Vehicles propelled by an internal combustion engine or electric motor, used for the transportation of people and goods on road surfaces.
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