When an Unstable U Nucleus Undergoes Alpha Decay, the Nucleus

question 159

Multiple Choice

When an unstable U nucleus undergoes alpha decay, the nucleus formed is that of

• A) Uranium.
• B) Plutonium.
• C) Protactinium.
• D) Thorium.
• E) Neptunium.

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Definitions:

Proton Spin Decoupled

A technique in NMR spectroscopy where the coupling between protons is removed to simplify the spectrum.

Distinct Quartets

In NMR spectroscopy, a pattern indicating a group of hydrogen atoms coupled to three other hydrogens, resulting in four equally spaced peaks.

Off-Resonance Decoupled

In NMR spectroscopy, a technique used to simplify complex spectra by decoupling specific nuclei from the observed spin-spin interactions.

Proton Spin Decoupled

A technique in nuclear magnetic resonance (NMR) spectroscopy that removes the interaction between proton spins to simplify the spectrum and aid in structural analysis.