The Electron in a Hydrogen Atom Falls from an Excited

question 32

Multiple Choice

The electron in a hydrogen atom falls from an excited energy level to the ground state in two steps, causing the emission of photons with wavelengths of 2624 nm and 97.2 nm, respectively. What is the principal quantum number or shell of the initial excited energy level from which the electron falls

• A) 2
• B) 3
• C) 4
• D) 6
• E) 8

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Definitions:

Uniformitarianism

The principle suggesting that Earth's geologic processes acted in the same manner and with essentially the same intensity in the past as they do in the present, and that this consistency accounts for all geological changes.

Allopatric Speciation

Speciation pattern in which a physical barrier arises and separates populations, ending gene flow between them.

Geographic Isolation

A form of reproductive isolation in which two populations are separated by physical barriers, leading to the development of distinct species.

Rapid Evolutionary Change

A process where species undergo significant alterations in their genetic makeup over relatively short geological periods, often in response to dramatic environmental shifts.