Determine the Radius of an Al Atom (In Pm)if the Density

question 53

Multiple Choice

Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g cm^-3. Aluminum crystallizes in a face-centred cubic structure with an edge length of 2 r.

• A)143 pm
• B)227 pm
• C)96 pm
• D)172 pm
• E)193 pm

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Definitions:

Bats

Flying mammals known for their echolocation capability, playing crucial roles in pollination, seed dispersal, and insect population control.

Extinction

The permanent loss of all members of a species, eliminating its presence from the Earth.

Low Reproduction Rate

refers to the situation in which a species or population produces offspring at a rate that is lower than the average, often leading to concerns about population sustainability and growth.

Extinction Crisis

A period characterized by a significant increase in the rate at which species become extinct, often due to human activities.