Doubly-Ionized Lithium Is a Hydrogen-Like Ion,in Which the Nucleus with Charge

question 31

Multiple Choice

Doubly-ionized lithium is a hydrogen-like ion,in which the nucleus with charge 3e is orbited by a single electron.What wavelength light would be emitted from Li⁺⁺ as the electron dropped from the n = 4 to the n = 3 orbit?

• A) 16.9 µm
• B) 1.88 µm
• C) 470 nm
• D) 208 nm

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Definitions:

MC

Stands for Marginal Cost, which is the cost of producing one additional unit of a good or service.

ATC

Average Total Cost, which is the total cost per unit of output incurred when producing goods or services. It includes both fixed and variable costs.

MR

An abbreviation for Marginal Revenue, which is the additional income from selling one more unit of a good or service.

Long-Run Equilibrium

A situation in a market where supply equals demand, and all factors of production - including labor and capital - are fully utilized, leading to stable prices.