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The Structural Formula for a Certain Molecule Includes a Group

question 49

Multiple Choice

The structural formula for a certain molecule includes a group symbolized -O.The dash next to the oxygen atom means that a single bond exists to another atom,such as a carbon.Based on the valence of oxygen and the number of bonds it normally forms,what is the charge on the oxygen atom in this case?

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Definitions:

Subsurface Mining

Extraction of minerals and resources from below Earth's surface, involving techniques that may harm the environment through alteration of land structure and pollution.

Longwall Mining

A method of coal mining where a long wall of coal is mined in a single slice, typically used in underground mines.

Smelting

The process of extracting a metal from its ore by using heat and a chemical reducing agent to decompose the ore, removing impurities.

Igneous Rocks

Rocks formed from the cooling and solidification of magma or lava, classified into intrusive (slow cooling inside the earth) and extrusive (quick cooling on the surface) types, such as granite and basalt.