Calculate the Wavelength, in Nanometers, of the Light Emitted by a Hydrogen

question 105

Multiple Choice

Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n = 7 to the n = 4 principal energy level.Recall that the energy levels of the H atom are given by E_n = -2.18 × 10^-18 J(1/n²)

• A)9.18 × 10^-20 nm
• B)4.45 × 10^-20 nm
• C)2.16 × 10^-6 nm
• D)2.16 × 10³ nm
• E)1.38 × 10¹⁴ nm

Recognize the role and impact of the Supreme Court in influencing US politics and society.

Analyze the influence of political spending and lobbying on elections and policy making.

Evaluate the significance of presidential elections and their outcomes on national and international policies.

Understand the complexities and consequences of American foreign policies in the Middle East.

---

Definitions:

Time Effectiveness

Time effectiveness refers to how well and efficiently time is managed and utilized to achieve desired outcomes.

Ongoing Process

A continuous operation or series of actions that evolve over time, indicating that it is not stationary but constantly moving or developing.

Deciding

The cognitive process of choosing between different options or actions.

Tasks

Refers to specific duties or work to be completed by a person or group.