The Two Types of Closest-Packed Lattices Are

question 25

Multiple Choice

The two types of closest-packed lattices are

• A)cubic closest-packed and face-centered cubic.
• B)cubic closest-packed and hexagonal closest-packed.
• C)cubic closest-packed and square closest-packed.
• D)cubic closest-packed and pyramidal closest-packed.
• E)square closest-packed and hexagonal closest-packed.

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Definitions:

Nitrogen Oxides

Gaseous pollutants formed primarily from the combustion of fossil fuels, consisting of nitrogen and oxygen; known for contributing to acid rain and air pollution.

Ozone

A molecule composed of three oxygen atoms, known for its protective layer in the Earth's stratosphere and as a pollutant at ground level.

National Ambient Air Quality Standards

Regulations established by the United States Environmental Protection Agency intended to limit pollution and protect public health and the environment.

EPA

The Environmental Protection Agency, a U.S. governmental agency tasked with protecting human health and the environment through regulations and enforcement.