Electrons Can Be Used to Probe the Arrangement of Atoms

question 75

Multiple Choice

Electrons can be used to probe the arrangement of atoms on a solid surface if the wavelength of the electrons is comparable with the spacing between the atoms.Which of the following electron velocities would be appropriate for use in this application if the atoms are separated by 0.320 nm?

• A)1.24 × 10³ m/s
• B)8.06 × 10³ m/s
• C)2.27 × 10⁶ m/s
• D)4.41 × 10⁶ m/s
• E)3.00 × 10⁸ m/s

---

Definitions:

Existence Need Category

A category in Maslow's hierarchy of needs that includes basic physical requirements such as food, water, and shelter.

Physiological

Relating to the functions of living organisms and their parts, or the physical and chemical factors and processes involved.

Clayton Alderfer

An American psychologist known for developing ERG Theory, which categorizes human needs into existence, relatedness, and growth categories.

Interpersonal Safety

The condition in which an individual feels secure and free from threat or harm in their interactions with others, fostering open communication and trust.