In the ¹H NMR Spectrum of Bromoethane the Methylene Group

question 78

Multiple Choice

In the ¹H NMR spectrum of bromoethane the methylene group is split into a quartet by the α and β nuclear spins of the protons on the neighboring methyl group. If the external magnetic field, B_∘, directs upward, which sequence of nuclear spins contributes to the second farthest peak down field within the spin-spin splitting pattern?

• A) ↑↓↓
• B) ↑↓↑
• C) ↑↑↑
• D) ↓↓↓
• E) ↑↑↓↓

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Definitions:

Internal Consistency

The degree to which an assessment measures a single concept or construct reliably across multiple items or questions.

Test Retest Reliability

A measure of consistency where the same test is administered to the same group at two different points in time to assess the stability of the results.

Internal Consistency

A measure of the reliability of a psychological test or survey, reflecting the extent to which all items assess the same characteristic.

Face Validity

The extent to which a test or measurement appears effective in terms of its stated aims to those taking or observing it, on the surface level.