If an Electron Has a Measured Wavelength of 1

question 7

Multiple Choice

If an electron has a measured wavelength of 1.20 × 10−¹⁰ m,what is its kinetic energy? (h = 6.63 × 10−³⁴ J⋅s,1 eV = 1.6 × 10−¹⁹ J,and m_e = 9.11 × 10−³¹ kg)

• A) 209 eV
• B) 55.0 eV
• C) 105 eV
• D) 147 eV

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Definitions:

Theoretical Knowledge

Knowledge that is based on theories and principles, often contrasted with practical knowledge or experience.

Stage Theory

A psychological theory that proposes development occurs in distinct and successive stages, each with its own challenges and characteristics.

Discontinuity

A concept that denotes abrupt changes or breaks in development, patterns, or processes, contrasting with continuous, gradual transformations.

Industry Versus Inferiority

A stage in Erik Erikson's theory of psychosocial development where, typically during childhood, kids gain a sense of competence through completing tasks or they feel inferior if they fail.