An Electron Is Trapped in a Deep Well with a Width

question 43

Multiple Choice

An electron is trapped in a deep well with a width of 0.3 nm.If it is in the state with quantum number n = 3 its kinetic energy is:

• A)6.0 * 10^-28 J
• B)1.8 *10^-27 J
• C)6.7*10^-19 J
• D)2.0 *10^-18 J
• E)6.0 * 10^-18 J

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Definitions:

Nuclear Envelope

The double-layered membrane that encloses the nucleus of a cell, separating it from the cytoplasm and regulating the passage of materials between the nucleus and cytoplasm.

Double-layered Membrane

A structure consisting of two layers of membrane that can envelop or line cellular organelles or body cavities.

Microvilli

Finger-like protrusions from the surface of some cells, increasing their surface area for absorption.

Cilia

Microscopic, hair-like structures on the surface of cells, moving fluid or mucus across the cell surface.