What Is the Coordination Number of Magnesium in MgO? the Ionic

question 42

Multiple Choice

What is the coordination number of magnesium in MgO? The ionic radii of Mg²⁺ and O^2- are 72 and 140 pm, respectively.

• A) 4
• B) 2
• C) 8
• D) 6
• E) 12

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Definitions:

Aniline

An organic compound consisting of a phenyl group attached to an amino group, used as a precursor to numerous industrial chemicals.

Acidic Reagents

Chemicals used in reactions to donate protons (H+) or accept electrons, often employed to catalyze the breakage or formation of bonds.

Friedel-Crafts Reactions

A class of chemical reactions involving the alkylation or acylation of aromatic rings with the aid of a Lewis acid catalyst.

Pyridine

An aromatic heterocyclic organic compound characterized by a six-membered ring structure composed of five carbon atoms and one nitrogen atom.