How Many 3d Electrons Does the Manganese(II) Ion, Mn²⁺, Have

question 32

Multiple Choice

How many 3d electrons does the manganese(II) ion, Mn²⁺, have

• A) 3
• B) 4
• C) 5
• D) 6
• E) 7

---

Definitions:

Ketone

Organic compounds characterized by the presence of a carbonyl group (C=O) connected to two carbon atoms within the molecular structure, not at the end as in aldehydes.

Carbon NMR

A spectroscopic technique that utilizes nuclear magnetic resonance to study and identify the carbon atoms within an organic molecule.

Chemical Shift

A measure in nuclear magnetic resonance (NMR) spectroscopy that indicates the environment of nuclear spins in molecules.

UV Spectra

The range of the electromagnetic spectrum with wavelengths shorter than visible light, often used to determine the absorption characteristics of molecules.